S. Gupta and S. Khera, “On <I>Thelohanellus ophthalmicus</I> (Myxozoa : Myxosporea) and Histopathological Changes due to this Parasite in the Gills of <I>Catla Catla</I>”;, rzsi, vol. 91, no. 2, pp. 263–270, Dec. 1992.