Prodazhnye pepsiny v sravnenīi s normalʹnym zheludochnym sokom - Konovalov, Petr Nikolaevich, b. 1859 (Serī︠i︡a disserta︠t︡sīĭ, dopushchennykh k zashchit︠i︡e v Imperatorskoĭ voenno-medi︠t︡sinskoĭ akademīi v 1892-1893 godu, 1893)