Inter-individual diversity and intra-individual stability of amphetamine-induced sensitization of frequency-modulated 50-kHz vocalization in Sprague-Dawley rats. - Taracha, Ewa; Hamed, Adam; Krząścik, Paweł; Lehner, Małgorzata; Skórzewska, Anna; Płaźnik, Adam; Chrapusta, Stanisław (Psychopharmacology, 2012)