Gupta, Vaishali, and Deepak Vyas. “The Antimicrobial Effect of a Cyclic Peptide Nostophycin Isolated from Wastewater Cyanobacteria, Nostoc Calcicola”. Current Botany 12 (April 29, 2021): 94–101. Accessed October 5, 2025. https://www.updatepublishing.com/journal/index.php/cb/article/view/6612.