Rivolta is generally credited with discovering the first
opisthorchid, which he named Distoma felineus, in a cat in Italy in 1884.
Loktev et al., "Molecular identification and phylogenetic analysis of nuclear rDNA sequences among three
opisthorchid liver fluke species (Opisthorchiidae: Trematoda)," Parasitology International, vol.
Differential diagnosis of
opisthorchid and heterophyid metacercariae (Trematoda) infecting flesh of cyprinid fish from Nam Ngum Dam Lake in Lao PDR.