by PURCHASE, E R, BRAUN, C E
Published in Organic syntheses (1946)

by Yang, William H., Purchase, Emerson C.R., Rivington, Robert N.
Published in Journal of allergy and clinical immunology (01.09.1986)

by BROWN, G M, PURCHASE, E C R, BRESNAHAN, T J
Published in Gastroenterology (New York, N.Y. 1943) (01.07.1952)