Suneerat Ruangsomboon, Amnat Chidthaisong, Boosya Bunnag, Duangrat Inthorn, and Narumon W. Harvey, “Lead (Pb2+) Removal from Wastewater by the Cyanobacterium Calothrix marchica”, Agr. Nat. Resour., vol. 40, no. 3, pp. 784–794, Jun. 2006.