@inbook{d4996596ce7842b4b58990ab1db8b11f,
title = "Natural mechanisms of pain inhibition",
author = "Morgan, {M. M.} and Raz Yirmiya and P. Marek and Liebeskind, {John C.}",
year = "1989",
language = "American English",
isbn = "9780881675191",
series = "Advances in Pain Research & Therapy",
publisher = "Raven Press",
pages = "311--318",
editor = "Hill, {C. Stratton } and Fields, {William S. }",
booktitle = "Drug Treatment of Cancer Pain in a Drug-Oriented Society",
address = "United States",
}