by Zipkin, Mitchell, Backus, W.Walter, Scott, Bharathi, Poppers, Paul J.
Published in Journal of clinical anesthesia (01.03.1991)

by Vitkun, Stephen A., Madden, Robert L., Zipkin, Mitchell, Poppers, Paul J.
Published in Journal of clinical anesthesia (1991)

by Sundar, S K, Ablashi, D V, Armstrong, G R, Zipkin, M, Faggioni, A, Levine, P H
Published in International journal of cancer (15.10.1981)