R. M. Gonçalves, S. R. P. da Silva, and N. S. Stobbe, “FREQUENCY OF PARASITES ON LETTUCE (Lactuca sativa) FROM SELF-SERVICE RESTAURANTS OF PORTO ALEGRE CITY, BRAZIL”, Rev Patol Trop, vol. 42, no. 3, Oct. 2013, doi: 10.5216/rpt.v42i3.26926.