"Triannually" . . . . . . . . "Prooftexts (journal)" . "Prooftexts (journal)|}}" . "Prooftexts (journal)" . . "Prooftexts" . "0272-9601" . . "1981" . . . . "81644077" . . "Prooftexts" . . . "1086-3311" . . "02729601" . . "795958492" . .