Kax, A. Majeed, Usha Bakaya (Kachboo), and G. N. Javeid. 1978. “<I>Wolffia papulifera< I> Thomps. And <I>W. Columbiana< I> Karsten-Two New Plant Records for India”. Indian Forester 104 (4):282-85. https://doi.org/10.36808/if/1978/v104i4/11764.