{{cite journal | last1=Yaqub | first1=A. | author2=M. S. Mughal | author3=A. Adnan | author4=W. A. Khan | author5=K. M. Anjum | year=2012 | title=BIOSORPTION OF HEXAVALENT CHROMIUM BY Spirogyra spp.: EQUILIBRIUM, KINETICS AND THERMODYNAMICS | journal=Journal of Animal and Plant Sciences | volume=22 | issue=2 | pages=408-415 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2012-JAPS-228}}