| author: | Nasonov N |
| title: | Über den Heliotropismus der Turbellaria rhabdocoelida des Baikalsees. (Works of the Laboratory of Experimental Zoology and Morphology of Animals of the Academy of Sciences) |
| publication: | Trav Lab Zool Exp Morph Anim, Leningrad. 4:195-204 |
| year: | 1935 |