Picard, JJ., Pelle, R., Schonne, E., Dworkinrastl, E., & Dworkin, MB. (1986). Tumorigenic Xenopus Cells Express Several Maternal and Early Embryonic Messenger-rnas. Experimental Cell Research : emphasizing molecular approaches to cell biology, 167(1), 157-165. https://doi.org/10.1016/0014-4827(86)90213-2 (Original work published 1986)