by Hudson, L G, Ertl, A P, Gill, G N
Published in The Journal of biological chemistry (15.03.1990)

by Ertl, Adrienne P., Gill, Gordon N.
Published in Gene (22.12.1993)

by Gretchen Ertl/AP
Published in The commercial appeal (14.08.2000)

by Van Buecken, K, Barrack, R L, Alexander, A H, Ertl, J P
Published in The American journal of sports medicine (01.05.1989)