Kaneva, Eleonora. “SEROEPIDEMIOLOGICAL STUDY OF THE PREVALENCE OF TOXOCARIASIS AMONG HEALTHY PERSONS IN SOME AREAS OF BULGARIA”. PROBLEMS of Infectious and Parasitic Diseases, vol. 49, no. 2, Aug. 2021, pp. 47-50, https://doi.org/10.58395/pipd.v49i2.66.