1. Statistics of multiple primary malignant neoplasms and related problems;Baba;Clinics of Cancer,1971
2. Computing method for the rate of spontaneous tumors and an example of spontaneous mammary tumors in DD mouse;Tsubura;Exp. Anim.,1971
3. Spontaneous tumors in Sprague-Dawley rats and Swiss mice;Prejean;Cancer Res.,1973
4. Spontaneous tumors in mouse, rat, and hamster used in carcinogenesis experiments;Maekawa;Mutagens and Toxicol,1981
5. An appraisal of carcinogenesis test in animals;Hayashi;Pathol. and Clin. Med.,1983