1. Introduction to Genes, Oncogenes, and Anti-oncogenes
   Undurti N. Das, 2020, Molecular Biochemical Aspects of Cancer CrossRef
2. Stepwise Expression of CDKN2A and RB1 Proteins in Esophageal Mucosa From Patients at High Risk for Squamous Cell Carcinoma
   Leandro B. Müller et al, 2014, Applied Immunohistochemistry & Molecular Morphology CrossRef