Bardo, M. ., Bhatnagar, R. ., & Gebhart, G. . (1983). Chronic naltrexone increases opiate binding in brain and produces supersensitivity to morphine in the locus coeruleus of the rat. Brain Research, 289(1-2), 223-34. https://doi.org/10.1016/0006-8993(83)90023-9 (Original work published 1983)

Bardo, M. ., Bhatnagar, R. ., & Gebhart, G. . (1983). Age-related differences in the effect of chronic administration of naloxone on opiate binding in rat brain. Neuropharmacology, 22(4), 453-61. https://doi.org/10.1016/0028-3908(83)90163-6

Bardo, M. ., Bhatnagar, R. ., & Gebhart, G. . (1982). An improved filtration procedure for measuring opiate receptors in small regions of rat brain. Journal of Neurochemistry, 39(6), 1751-4. https://doi.org/10.1111/j.1471-4159.1982.tb08015.x

Bardo, M. ., Bhatnagar, R. ., & Gebhart, G. . (1982). Differential effects of chronic morphine and naloxone on opiate receptors, monoamines, and morphine-induced behaviors in preweanling rats. Brain Research, 256(2), 139-47. https://doi.org/10.1016/0165-3806(82)90037-2

Bardo, M. ., Bhatnagar, R. ., Gebhart, G. ., & Hughes, R. . (1982). Opiate receptor development in midbrain and forebrain of posthatch chicks. Brain Research, 255(4), 668-73. https://doi.org/10.1016/0165-3806(82)90064-5

Bardo, M. ., Bhatnagar, R. ., & Gebhart, G. . (1981). Opiate receptor ontogeny and morphine-induced effects: influence of chronic footshock stress in preweanling rats. Brain Research, 227(4), 487-95. https://doi.org/10.1016/0165-3806(81)90003-1