by Huang, D B, Spiga, R, Koo, H
Published in Brain injury (01.10.2005)

by Spiga, R, Macenski, M J, Meisch, R A, Roache, J D
Published in Behavioural pharmacology (01.02.1997)

by SPIGA, Ralph, MARTINETTI, Margaret P, MEISCH, Richard A, COWAN, Katherine, HURSH, Steven
Published in Psychopharmacologia (01.03.2005)

by Marsh, Dawn M, Dougherty, Donald M, Moeller, F.Gerard, Swann, Alan C, Spiga, Ralph
Published in Neuropsychopharmacology (New York, N.Y.) (01.05.2002)

by Roache, J.D., Cherek, D.R., Spiga, R., Bennett, R.H., Cowan, K.A., Yingling, J.
Published in Pharmacology, biochemistry and behavior (01.08.1990)

by Spiga, Ralph, Schmitz, Joy, Day II, James
Published in Drug and alcohol dependence (01.04.1998)

by Spiga, R, Huang, D B, Meisch, R A, Grabowski, J
Published in Experimental and clinical psychopharmacology (01.02.2001)

by Schmitz, Joy A, Sayre, Shelly L, Hokanson, Patricia S, Spiga, Ralph
Published in Nicotine & tobacco research (01.10.2003)

by Schmitz, J M, Spiga, R, Rhoades, H M, Fuentes, F, Grabowski, J
Published in Nicotine & tobacco research (01.03.1999)

by Elk, Ronith, Schmitz, Joy, Spiga, Ralph, Rhoades, Howard, Andres, Robert, Grabowski, John
Published in Addictive behaviors (01.07.1995)

by ELK, R, GRABOWSKI, J, RHOADES, H, SPIGA, R, SCHMITZ, J, JENNINGS, W
Published in Journal of substance abuse treatment (01.07.1993)

by Bennett, R H, Cherek, D R, Spiga, R
Published in Alcoholism, clinical and experimental research (01.08.1993)

by Cherek, D R, Roache, J D, Egli, M, Davis, C, Spiga, R, Cowan, K
Published in Psychopharmacology (01.05.1993)

by Spiga, R, Day, 2nd, J D, Schmitz, J M, Broitman, M, Elk, R, Caperton-Brown, H
Published in Experimental and clinical psychopharmacology (01.11.1998)

by Cherek, Don R., Spiga, Ralph, Roache, John D., Cowan, Katherine A.
Published in Pharmacology, biochemistry and behavior (01.12.1991)

by Cherek, Don R., Spiga, Ralph, Egli, Mark
Published in Journal of the experimental analysis of behavior (01.11.1992)

by Spiga, Ralph, Bennett, Robert H., Cherek, Don R., Grabowski, John
Published in Drug and alcohol dependence (1994)

by Roache, John D., Spiga, Ralph, Burt, Diana B.
Published in Drug and alcohol dependence (01.05.1993)

by Zeichner, A, Allen, J D, Spiga, R, Rudd, J, Brown, A
Published in Physiology & behavior (01.01.1990)

by Cherek, Don R., Spiga, Ralph, Steinberg, Joel L., Kelly, Thomas H.
Published in Journal of the experimental analysis of behavior (01.03.1990)