Hammerslag, L. ., Hofford, R. ., Kang, Q. ., Kryscio, R. ., Beckmann, J. ., & Bardo, M. . (2020). Changes in fentanyl demand following naltrexone, morphine, and buprenorphine in male rats. Drug and Alcohol Dependence, 207, 107804. https://doi.org/10.1016/j.drugalcdep.2019.107804 (Original work published 2020)

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. ., Denehy, E. ., Carper, B. ., Nolen, T. ., Prendergast, M. ., & Bardo, M. . (2021). Effects of the glucocorticoid receptor antagonist PT150 on stress-induced fentanyl seeking in male and female rats. Psychopharmacology, 238(9), 2439-2447. https://doi.org/10.1007/s00213-021-05865-0

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