1. Stimulatory and inhibitory actions of clonidine on the locomotor activity in the rat;Bednarczyk;Pol. J. Pharm. Pharmacol.,1977
2. Splitting of circadian rhythms in the rat;Boulos;J. Comp. Physiol.,1979
3. Splitting of circadian rhythms of activity in hamsters: Effects of exposure to constant darkness and subsequent reexposure to constant light;Earnest;J. Comp. Physiol.,1982
4. The long term clonidine treatment induced behavioral depression in rats;Enginar;Pol. J. Pharmacol. Pharm.,1990
5. Behavioral depression following clonidine withdrawal: A new animal model of long-lasting depression?;Hoffman;Psychopharmacol. Bull.,1986