"this example was first used"

P'SYCHOLOGY AND PHILOSOPHYby RM Hare - 1967 - Cited by 28 - Related articles
So far as I know, this example was first used in an article by. Professor Alf Ross (Ph. of Sci., 1944, p. 38). It seems at first sight ...
www.jstor.org/stable/2251842