Between the 1950s and 1970s, Frikel wrote seven works (Frikel 1957, 1958, 1960, 1961a,b, 1964, 1971, 1973) relating to the Tiriyó.
Between the 1950s and 1970s, Frikel penned seven works (Frikel 1957, 1958, 1960, 1961a,b, 1964, 1971, 1973) concerning the Tiriyó.