Kannaujiya, Vinod K., et al. “Cumulative Effects of Ultraviolet Radiation and Photosyntheically Active Radiation on Phycobiliproteins of A Hot-Spring Cyanobacatrium Nostoc Sp. Strain HKAR-2”. International Journal of Applied Sciences and Biotechnology, vol. 4, no. 3, Sept. 2016, pp. 247-53, doi:10.3126/ijasbt.v4i3.15595.