Videnova, Mihaela. “IMPACT OF THE ENVIRONMENT ON DEVELOPMENT OF HELMINTH AND PROTOZOAN INVASIVE ELEMENTS AND CONTEMPORARY METHODS FOR SANITARY- PARASITOLOGICAL DIAGNOSTICS: REVIEW”. PROBLEMS of Infectious and Parasitic Diseases 47, no. 2 (December 30, 2019): 18-23. Accessed April 1, 2020. https://pipd.ncipd.org/index.php/pipd/article/view/47_2_5_IMPACT_OF_THE_ENVIRONMENT_ON_DEVELOPMENT_OF_HELMINTH_AND_.