R. L. Vallejo VALLEJO, R. L., COLLINS, W. W., & YOUNG, J. B. (1995). INHERITANCE OF RESISTANCE TO POTATO-VIRUS-Y AND POTATO-VIRUS-X IN HYBRID SOLANUM-PHUREJA X SOLANUM-STENOTOMUM DIPLOID POTATOES. JOURNAL OF HEREDITY, 86(2), 89–93. https://doi.org/10.1093/oxfordjournals.jhered.a111554 Vallejo, R. L., Collins, W. W., Schiavone, R. D., Lommel, S. A., & Young, J. B. (1994). Extreme resistance to infection by potato virus Y and potato virus X in an advanced hybridSolanum phureja — S. Stenotomum diploid potato population. American Potato Journal, 71(10), 617–628. https://doi.org/10.1007/BF02851431 Vallejo, R. L., Collins, W. W., & Schiavone, R. D. (1994). Genetics and incorporation of glandular trichomes and polyphenol oxidase activity into an advanced Solanum phureja-S. stenotomum diploid potato population. Journal of the American Society for Horticultural Science, 119(4), 824. Vallejo, R. L., Collins, W. W., & Moll, R. H. (1994). Inheritance of A and B glandular trichome density and polyphenol oxidase activity in diploid potatoes. Journal of the American Society for Horticultural Science, 119(4), 829.