Wiessler M, Schmähl D
Z Krebsforsch Klin Onkol Cancer Res Clin Oncol. 1976 Dec 20;88(1):25-31. doi: 10.1007/BF00284744.
The compounds mentioned in the title were tested for carcinogenicity in rats. All compounds proved to be carcinogens which showed interesting differences above all in the organotropy of action and in the induction periods of tumors.