Esteban, S., et al., Activation and desensitization by cyclic antidepressant drugs of å2-autoreceptors, å2-heteroreceptors and 5-HT1A-autoreceptors regulating monamine synthesis in the rat brain in vivo. Naunyn Schmiedebergs. Naunyn Schmiedebergs Arch. Pharmacol. 360, 135-143, (1999) Makhay, M.M., and O'Donnell, J.M., Effects of antidepressants in rats trained to discriminate the β-2 adrenergic agonist clenbuterol. Pharmacol. Biochem. Behav. 63, 319-324, (1999) Huang, Y., Inhibitory effect of noradrenaline uptake inhibitors on contractions of rat aortic smooth muscle. Br. J. Pharmacol. 117, 533-539, (1996)