original description
(of Helix christophori Rosen, 1911) Rosen, O.W. von. (1911). Die Mollusken Ciskaukasiens und speciell des Kuban-Gebietes. <em>Annuaire du Musée Zoologique de l'Académie Impériale des Sciences de St.-Pétersbourg / Ezhegodnik Zoologicheskago muzeia.</em> 16 (1): 86-142, pl. 2-3. St.-Petersburg [May]., available online at https://www.biodiversitylibrary.org/page/8484525
page(s): 110 [details]
additional source
Sysoev, A. V. & Schileyko, A. A. (2009). Land snails and slugs of Russia and adjacent countries. <em>Sofia/Moskva (Pensoft).</em> 312 pp., 142 plates. [June] [= Pensoft Series Faunistica No 87].
page(s): 202, Fig. 123D [details] Available for editors [request]
From editor or global species database
Type locality “am Ufer des Uruschten, c. 30 Werst südlich Psebai” (southern Krasnodar Territory, Russia) [details]