I do not see how this suggestion could be positively refuted. It enjoys a status well known in academic circles and doubtless elsewhere,—that of the Remotely Conceivable Alternative, contrary to the obvious implication of the facts, incapable of proof or disproof.
-- Denys L. Page (1908-1978), History and the Homeric Iliad (Berkeley: University of California Press, 1966), p. 57
A Google Books search for “positively refuted” yields the following:
A second loop-hole concerns only the alien invaders. It is theoretically possible that the Troy-invaders might have adopted the Gray Minyan Ware technique from the Hellas-invaders in circumstances which include no implication about community of culture. The two parties, though involved in the same great migration, might be racially different, and the Troy-invaders might have moved later than the Hellas-invaders. The former might have settled for a time en route somewhere near the fringes of the latter—in the region of Macedonia and Chalcidice, perhaps, -- remaining in contact long enough to learn the technique of this ceramic art (and apparently nothing else.) [ANATOLY’S QUOTE GOES HERE] The Aegean shores were invaded in the same era by two peoples sharing a specialized and otherwise unknown technique in pottery: common sense will always insist that the two peoples were kindred in culture, -- that their association was not brief, peripheral, and more or less fortuitous, but protracted and intimate.
-- Denys L. Page (1908-1978), History and the Homeric Iliad (Berkeley: University of California Press, 1966), p. 57
Any context? (e.g. what the suggestion is)
A Google Books search for “positively refuted” yields the following: