Lewis, P., Lewis, P., & Parry, J. (2002). An exploratory analysis of multiple mutation spectra. Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 518(2), pp. 163-180. doi:10.1016/S1383-5718(02)00103-1

Lewis, Paul, P.D Lewis, and J.M Parry. "An Exploratory Analysis of Multiple Mutation Spectra." Mutation Research/Genetic Toxicology and Environmental Mutagenesis 518, no. 2 (2002): 163-180.

Lewis, Paul, P.D Lewis, and J.M Parry. "An Exploratory Analysis of Multiple Mutation Spectra." Mutation Research/Genetic Toxicology and Environmental Mutagenesis 518.2 (2002): 163-180.