Helena, C., Gustafsson, J., Korach, K., Pfaff, D., Anselmo-Franci, J. A., & Ogawa, S. (2009). Effects of estrogen receptor α and β gene deletion on estrogenic induction of progesterone receptors in the locus coeruleus in female mice. Endocrine.

Helena, Cleyde, Jan-Åke Gustafsson, Kenneth Korach, Donald Pfaff, Janete A. Anselmo-Franci, και Sonoko Ogawa. "Effects of Estrogen Receptor α and β Gene Deletion On Estrogenic Induction of Progesterone Receptors in the Locus Coeruleus in Female Mice." Endocrine 2009.

Helena, Cleyde, et al. "Effects of Estrogen Receptor α and β Gene Deletion On Estrogenic Induction of Progesterone Receptors in the Locus Coeruleus in Female Mice." Endocrine 2009.