“Viability of Different Pear Pollen and the Effect on Fruit Set of ‘Anjou’ Pear ( Pyrus CommunisL.)”. Journal of the American Pomological Society 50, no. 2 (April 1, 1996): 118–124. Accessed January 30, 2026. https://journal.americanpomological.org/index.php/jofaps/article/view/2217.