Marusich, J. ., McCuddy, W. ., Beckmann, J. ., Gipson, C. ., & Bardo, M. . (2011). Strain differences in self-administration of methylphenidate and sucrose pellets in a rat model of attention-deficit hyperactivity disorder. Behavioural Pharmacology, 22(8), 794-804. https://doi.org/10.1097/FBP.0b013e32834d623e