Levine JD, Murphy DT, Seidenwurm D, Cortez A, Fields HL. A study of the quantal (all-or-none) change in reflex latency produced by opiate analgesics. Brain Res. 1980 Nov 10; 201(1):129-41.
1980
http://profiles.ucsf.edu/profile/83695845
6251949
Levine JD, Murphy DT, Seidenwurm D, Cortez A, Fields HL
