Malone, S., Keller, P., Hammerslag, L., & Bardo, M. (2021). Escalation and reinstatement of fentanyl self-administration in male and female rats. Psychopharmacology, 238(8), 2261-2273. https://doi.org/10.1007/s00213-021-05850-7

Bardo, M., Hammerslag, L., & Malone, S. (2021). Effect of early life social adversity on drug abuse vulnerability: Focus on corticotropin-releasing factor and oxytocin. Neuropharmacology, 191, 108567. https://doi.org/10.1016/j.neuropharm.2021.108567 (Original work published 2021)

Hammerslag, L., Humburg, B., Malone, S., Beckmann, J., Saatman, K., , & Bardo, M. (2022). Peer-induced cocaine seeking in rats: Comparison to nonsocial stimuli and role of paraventricular hypothalamic oxytocin neurons. Addiction Biology, 27(5), e13217. https://doi.org/10.1111/adb.13217

Malone, S., Shaykin, J., Stairs, D., & Bardo, M. (2022). Neurobehavioral effects of environmental enrichment and drug abuse vulnerability: An updated review. Pharmacology, Biochemistry, and Behavior, 173471. https://doi.org/10.1016/j.pbb.2022.173471 (Original work published 2022)