Lobov, A., Babkina, I., Maltseva, A., Mikhailova, N. and Granovitch, A. (2020) “Proteins of penial mamilliform glands in closely related <em>Littorina</em&gt; species (Mollusca, Caenogastropoda): variability and possible contribution to reproductive isolation”, Biological Communications, 65(2), pp. 200–212. doi: 10.21638/spbu03.2020.206.