RECABARREN, S. E., LOBOS, A., ROBINSON, C., ORELLANA, P. and PARILO, J. (2000) “Effect of melatonin on the pulsatile luteinizing hormone and growth hormone secretion in ewe lambs under food restriction”, Archivos de Medicina Veterinaria, 32(2), pp. 147–156. doi: 10.4067/S0301-732X2000000200002.