Title:Ultrasound confirmation of ovulation in mares : a normal corpus luteum or a hemorrhagic anovulatory follicle? / Juan Cuervo-Arango Lecina and John Newcombe.
Title:Relationship between dose of cloprostenol and age of corpus luteum on the luteolytic response of early dioestrous mares: a field study / J. Cuervo-Arango and J. R. Newcombe.