Modulation of heroin intake by ovarian hormones in gonadectomized and intact female rats - Mark A. Smith; Sarah B. Ethridge; Tallia Pearson; Huailin Zhang; Madison M. Marcus; Shannon L. Ballard; Alexander T. Casimir; Kenzie M. Potter; Karl T. Schmidt; Jessica L. Sharp; Andrea M. Robinson (Psychopharmacology, 2021)