Many critics are making a fuss over A. E. Hotchner's PAPA HEMINGWAY, book buyers are making it a best seller, and the great writer's widow is making it the cause of a lawsuit. Here is what an acknowledged Hemingway scholar makes of it. Mr. Young is Research Professor of English at Penn State and author of ERNEST HEMINGWAY, a book-length study first published in 1953 and translated into several foreign languages and issued in a revised edition in 1965.