# Tomatis L, Turusov V, Charles RT, Boicchi M. "Effect of long-term exposure to 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene, to 1,1-dichloro-2,2-bis(p-chlorophenyl)ethane, and to the two chemicals combined on CF-1 mice. "J Natl Cancer Inst. 1974;52(3):883–891. 