Menassol, J. B., Tautou, C., Collet, A., Chesneau, D., Lomet, D., Dupont, J., Malpaux, B., & Scaramuzzi, R. J. The effect of an intracerebroventricular injection of metformin or AICAR on the plasma concentrations of melatonin in the ewe: potential involvement of AMPK?. BMC Neuroscience, 12, https://doi.org/10.1186/1471-2202-12-76