Prakash N, Narayana K, Murthy GS, Moudgal NR, Honnegowda (1992)
The effect of malathion, an organophosphate, on the plasma FSH, 17 beta-estradiol and progesterone concentrations and acetylcholinesterase activity and conception in dairy cattle
Vet Hum Toxicol 34: 116