[1]M. Caltaru и N. Petrescu, PMI, т. 167, вып. 2, сс. 139-142, фев. 2006.

[1]M. Caltaru and N. Petrescu, "Experimental Researches on Metals Extraction With Organic Solvents by New Methods Using Liquid Membranes", PMI, vol. 167, no. 2, pp. 139-142, Feb. 2006.