by Christian, John E., Combs, Loyal W., Kessler, Wayne V.
Published in Science (American Association for the Advancement of Science) (03.05.1963)

by CHRISTIAN, JOHN E., COMBS, LOYAL W., KESSLER, WAYNE V.
Published in The American journal of clinical nutrition (01.07.1964)

by Schneider, R C, Gosch, H H, Norrell, H, Jerva, M, Combs, L W, Smith, R A
Published in Journal of neurosurgery (01.10.1970)

by CHRISTIAN, J E, COMBS, L W, KESSLER, W V
Published in Postgraduate medicine (01.08.1964)