Singh, S. and Tiwari, N. (2020) “Impact of sodium nitrate on astaxanthin production in green micro- alga Haematococcus pluvialis under laboratory condition”, International Journal of Scientific Research in Biological Sciences, 7(2), pp. 120–122. Available at: https://ijsrbs.isroset.org/index.php/j/article/view/348 (Accessed: 5 April 2025).