1. Caltaru M., Petrescu N., Vasiliu C. // Записки Горного института. 2006. Том 167№ 2. C. 135-138.

1. Caltaru M., Petrescu N., Vasiliu C. Copper extraction from diluted solutions using hollow fiber supported liquid membranes // Journal of Mining Institute. 2006. Том 167№ 2. C. 135-138.