B. D.  Sharma, ?Fungal associations in the roots of three species of Isoetes L.?, Aquatic Botany, vol. 61, no. 1, pp. 33 - 37, 1998.

B. D.  Sharma, ?Anatomy of scales and phyllopodia of Isoetes of Rajasthan?, Phytomorphology: An International Journal of Plant Morphology, vol. 48, no. 3, pp. 269 - 272, 1998.