Smith, T. T., Levin, M. E., Schassburger, R. L., Buffalari, D. M., Sved, A. F., & Donny, E. C. (2013). Gradual and Immediate Nicotine Reduction Result in Similar Low-Dose Nicotine Self-Administration. Oxford University Press.

Smith, Tracy T., Melissa E. Levin, Rachel L. Schassburger, Deanne M. Buffalari, Alan F. Sved, e Eric C. Donny. Gradual and Immediate Nicotine Reduction Result in Similar Low-Dose Nicotine Self-Administration. Oxford University Press, 2013.

Smith, Tracy T., et al. Gradual and Immediate Nicotine Reduction Result in Similar Low-Dose Nicotine Self-Administration. Oxford University Press, 2013.