Mehrjo, Farzad, Barzekar, Mojtaba, Shahbazi, Afsaneh, Hashemi, Hossein, Mohamadi, Elham. “Investigation of Physicochemical and Biological Factors Changes on the Production of Vermicompost by using Cow Manure and Earthworm Eisenia foetida.” Human & Environment, vol. 12, no. 39, 2014, pp. 75-83.