139. H.K. Choi, R.P. Gardner and K. Verghese, “ Monte Carlo Simulation of the Neutron Lifetime Logging Tool”, Transactions of the American Nuclear Society, 52, 354356 (1986).

143. H.K. Choi, K. Verghese, and R.P. Gardner, “ Monte Carlo Simulation of the Temporal and Spectral Responses of the Pulsed Neutron Logging Principle”, Nuclear Geophysics, 1 (1), 7181 (1987). 
153. R.P. Gardner, K. Verghese, H.K. Choi, and M. Mickael, “Specific Purpose Monte Carlo Modelling of Nuclear Well Logging Tool Responses”, IEEE Transactions on Nuclear Science, Vol. 35, No. 1, 882885, February (1988). 
154. M. Mickael, R.P. Gardner, and K. Verghese, “McDNL: A New Specific Purpose Monte Carlo Code for Simulation of DualSpaced Neutron Porosity Logs”, SPWLA TwentyNinth Annual Logging Symposium, Paper MM, 17 pages, June (1988). 
157. K. Verghese, R.P. Gardner, M. Mickael, C.M. Shyu, and T. He, “The Monte Carlo  Library LeastSquares Analysis Principle for Borehole Nuclear Well Logging Elemental Analyzers”, Nuclear Geophysics, Vol. 2, No. 3, 183190 (1988).

159. M. Mickael, H.K. Choi, R.P. Gardner, and K. Verghese, “Specific Monte Carlo Code Development for Nuclear WellLogging Tool Responses”, Nuclear Geophysics, Vol. 3, No. 4, pp. 339350 (1989). 
164. M. Mickael, K. Verghese, and R.P. Gardner, “Correlated Sampling Added to the Specific Purpose Monte Carlo Code McPNL for Neutron Lifetime Log Responses”, IEEE Transactions on Nuclear Science, Vol. 36, No. 1, 12201222 (1989).

165. R.C. Little, M. Mickael, K. Verghese, and R.P. Gardner, “Benchmark Neutron Porosity Log Calculations: A Comparison of MCNP and the Specific Purpose Code McDNL”, IEEE Transactions on Nuclear Science, Vol. 36, No. 1, 12231226 (1989). 
166. R.P. Gardner, M.W. Mickael, and K. Verghese, “Complete Composition and Density Correlated Sampling in the Specific Purpose Monte Carlo Codes McPNL and McDNL for Simulating Pulsed Neutron and Neutron Porosity Logging Tools”, Nuclear Geophysics, Vol. 3, No. 3, 157165 (1989). 
167. H.K. Choi, K. Verghese, and R.P. Gardner, “Experimental Benchmarking of the Specific Purpose Monte Carlo Code McPNL/v. 1.0 for Simulating Pulsed Neutron Logging Tool Response”, Nuclear Geophysics, Vol. 3, No. 3, 167177 (1989). 
168. R.P. Gardner, M.W. Mickael, C.W. Towsley, C.M. Shyu, and K. Verghese, “Correlated Sampling in the McDNL and McPNL Codes for Neutron Porosity and Neutron Lifetime Log Corrections”, IEEE Transactions on Nuclear Science, Vol. 37, No. 3, 13601366 (1990). 
174. M. Oraby, K. Verghese, and R.P. Gardner, “Investigation of an ImprovedSensitivity NeutronPorosity OilWell Logging Tool”, Nuclear Instruments and Methods in Physics Research A299, pp. 674681 (1990). 
178. R.P. Gardner and K. Verghese, “Nuclear Data for Well Logging”, Transactions of the American Nuclear Society, 63, 167168 (1991). 
179. R.P. Gardner, M.W. Mickael, and K. Verghese, “Specific Purpose Monte Carlo Code Development for Nuclear Well Logging Applications”, Progress in Nuclear Energy, Vol. 25, No. 23, 245264 (1991). 
180. R.P. Gardner and K. Verghese, “ Monte Carlo Nuclear Well Logging Benchmark Problems with Preliminary Intercomparison Results”, Nuclear Geophysics, Vol. 5, No. 4, 429438 (1991).

181. R.P. Gardner, Q. Ao, Y. Xie, P. Guo, T.H. Prettyman, and K. Verghese, “Iterative Convolution Augmented with Monte Carlo Simulation: Preliminary Formation Layer Results for Neutron Porosity and Natural GammaRay Logs”, SPWLA ThirtyThird Annual Logging Symposium, Paper R, 25 pages, June (1992).

185. S.A. Ghanem, R.P. Gardner, and K. Verghese, “ Monte Carlo Simulation of the Gamma Ray Backscatter Lithodensity Logging Tool Response”, Nuclear Geophysics, Vol. 7, No. 2, pp. 197208 (1993). 
193. T.H. Prettyman, R.P. Gardner, and K. Verghese, “The Specific Purpose Monte Carlo Code McENL for Simulating the Response of Epithermal Neutron Lifetime Well Logging Tools”, IEEE Transactions on Nuclear Science, Vol. 40, No. 4, pp. 933938 (1993).

194. S. Tallavarjula, K. Verghese, and R.P. Gardner, “Monte Carlo Optimization of Tittle’s Method for Σa Measurement of Geologic Samples”, Transactions of the American Nuclear Society, Vol. 69, pp. 179180, (1993). 
195. P. Guo, R.P. Gardner, and K. Verghese, “Demonstrated Log Interpretation and Design Uses of the Specific Purpose Monte Carlo Code McNGR for Natural GammaRay Logs”, Proceedings of the SPWLA 35th Annual Logging Symposium, Paper K, June 1922, (1994).

197. R.P. Gardner and D.E. Peplow, “Use of 16N for Measuring Cooling Water Flow Rate in the NCSU PULSTAR Reactor”, Transactions of the American Nuclear Society, Vol. 70, pp. 130131, (1994).

198. Q. Ao, R.P. Gardner, and K. Verghese, “A Combined Weight Window and Biasing Approach Based on a Subspace Importance Map in the Monte Carlo Simulation of GammaGamma Lithodensity Logging Tool Responses with the Revised McLDL Code”, IEEE Transactions on Nuclear Science, Vol. 42, No. 4, pp. 626633, 1995.

199. S. Tallavarjula, K. Verghese, and R.P. Gardner, “Thermal Neutron Scattering and Transmission Experiments Using Geologic Rock Samples”, Transactions of the American Nuclear Society, Vol. 71, pp. 140142, Washington, DC, November 1317, 1994.

203. P. Guo, D.E. Peplow, and R.P. Gardner, “Natural GammaRay Log Interpretation: SemiEmpirical, Principal Components Analysis, and Monte Carlo Multiply Scattered Components Approaches”, Nuclear Geophysics, Vol. 9, No. 4, pp. 305318, 1995.

204. Q. Ao and R.P. Gardner, “The McLDL Code with Subspace Weight Window Biasing Combined with the Monte Carlo Multiply Scattered Components Approach for Simulation of GammaGamma Lithodensity Logging Tools”, Nuclear Geophysics, Vol. 9, No. 6, pp. 497515, 1995. 
206. Pingjun Guo and Robin P. Gardner, “The Monte Carlo Multiply Scattered Components (MCMSC) Approach for Natural GammaRay Log Interpretation”, IEEE Transactions on Nuclear Science, Vol. 43, No. 3, June 1996. 
218. P. Guo, Q. Ao, and R.P. Gardner, “Spectral Gammaray Log Interpretation Algorithms Using the Monte Carlo Multiply Scattered Components Approach”, Applied Radiation and Isotopes, Vol. 48, No. 1012, pp.13731383, 1997.

231. Robin P. Gardner and Lianyan Liu, “ Monte Carlo Simulation of Neutron Porosity Oil Well Logging Tools: Combining the GeometryIndependent FineMesh Importance Map and OneDimensional Diffusion Model Approaches”, Nuclear Science and Engineering, 133, 8091 (1999).

238. A. Sood, R.P. Gardner, and T.K. Gray, “Steady Neutron Source Measurement Method for Σa and Σs in Geological Samples”, Applied Radiation and Isotopes, 53, 603616, 2000. 
247. Jing Sun and Robin P. Gardner, “Optimization of the Steady Neutron Source Technique for Absorption Cross Section Measurement by Using an 124SbBe Neutron Source”, Nuclear Instruments and Methods B, 213 pp. 2228, 2004. 
275. Hezhu Yin, Xiaogang Han, Libai Xu, Weijun Guo, Ashraf Shehata, and Robin Pierce Gardner, “Field and Benchmark Studies of LWD Nuclear Tool Response in High Angle and Horizontal Wells”, CD ROM Proceedings of the SPWLA 47th Annual Logging Symposium, Paper AAA, June 47, 2006. 
276. Xiaogang Han, Robin P. Gardner, W.A. Metwally, and Pingjun Guo, “A Conceptual C/O Tool Design with Coincidence Counting”, CD ROM Proceedings of the SPWLA 47th Annual Logging Symposium, Paper YY, June 47, 2006.

277. Robin P. Gardner, Xiaogang Han, and Pingjun Guo, “On Using Monte Carlo Generated Libraries for Applying the Library LeastSquares Analysis Approach to the C/O Tool”, CD ROM Proceedings of the SPWLA 47th Annual Logging Symposium, Paper DDD, June 47, 2006. 
281. Robin P. Gardner, Libai Xu, Jiaxin Wang, and Avneet Sood, “Some Lessons Learned from MCNP Usage”, CD ROM Proceedings of the SPWLA 48th Annual Logging Symposium, Paper K, June 36, 2007. 
282. Libai Xu, Hezhu Yin, and Robin P. Gardner, “Responses of Nuclear Tools in Layered Media”, CD ROM Proceedings of the SPWLA 48th Annual Logging Symposium, Paper L, June 36, 2007. 