Activity of the thermostable beta exotoxin of bacillus thuringiensis berliner on tetranychus urticae and tetranychus cinnabarinus Neal, J.W.Jr; Lindquist, R.K.; Gott, K.M.; Casey, M.L. Journal of Agricultural Entomology 4(1): 33-40 1987 https://eurekamag.com/research/004/667/004667713.php