BioStor
 | On the classification of the Cyclostomacea of Eastern Asia W T Blanford (1864) Annals and Magazine of Natural History 13: 441-465 |
 | XXIV.—On the animal and operculum of Georissa, W. Blanf., and on its relations to Hydrocena, Parreyss; with a note on Hydrocena tersa, Bens., and H. milium, Bens William T Blanford (1869) Annals And Magazine of Natural History 3: 173-179 |