Gupta, S., Bhatia, G., Sharma, A., & Saxena, S. (1969). Host defense peptides: An insight into the antimicrobial world. Journal of Oral and Maxillofacial Pathology : JOMFP, 22(2), 239-244. https://doi.org/10.4103/jomfp.JOMFP_113_16 (Original work published 1969)

Bhatia, G., Kumar, A., Khatri, M., Bansal, M., & Saxena, S. (1969). Assessment of the width of attached gingiva using different methods in various age groups: A clinical study. Journal of Indian Society of Periodontology, 19(2), 199-202. https://doi.org/10.4103/0972-124X.152106 (Original work published 1969)