O’Hara, B. ., Macdonald, E. ., Clegg, D. ., Wiler, S. ., Andretic, R. ., Cao, V. ., … Kilduff, T. . (1999). Developmental changes in nicotinic receptor mRNAs and responses to nicotine in the suprachiasmatic nucleus and other brain regions. Brain Research. Molecular Brain Research, 66(1-2), 71-82. https://doi.org/10.1016/s0169-328x(99)00004-2 (Original work published 1999)