1. Enteric viruses in ground and surface waters: a review of their occurrence and survival;Akin,1971
2. Survival of viruses of the enterovirus group (poliomyelitis, echo, coxsackie) in soil and on vegetables;Bagdasaryan;J. Hyg. Epidemiol. Microbiol. Immunol.,1964
3. Survival of enteric viruses;Bitton,1978
4. Survival of pathogenic and indicator organisms in ground water;Bitton;Ground Water,1983
5. Soil Chemistry;Bohn,1979