Sakmar, Thomas P. Image 1. Portrait of H. G. Khorana. <p>Image credit: Karina Ã…berg.</p> 2012-02-21
    https://plos.figshare.com/articles/figure/_Image_1_Portrait_of_H_G_Khorana_/1070779
10.1371/journal.pbio.1001273.g001