T. R. P. Ogata, J. L. Guerra, and F. J. Hernandez, “Histochemical comparative study of primary and metastatic tumors in nude rats xenotransplanted with KB cells”, Braz. J. Vet. Res. Anim. Sci., vol. 34, no. 4, pp. 203–206, Aug. 1997, doi: 10.11606/issn.2318-3659.v34i4p203-206.