Goodman, A. W. Remarks on the Gauss-Lucas theorem in higher dimensional space. (English) Zbl 0325.26016 Proc. Am. Math. Soc. 55, 97-102 (1976). MSC: 26C10 PDFBibTeX XMLCite \textit{A. W. Goodman}, Proc. Am. Math. Soc. 55, 97--102 (1976; Zbl 0325.26016) Full Text: DOI
Goodman, A. W.; Rahman, Q. I.; Ratti, J. S. On the zeros of a polynomial and its derivative. (English) Zbl 0172.35903 Proc. Am. Math. Soc. 21, 273-274 (1969). PDFBibTeX XMLCite \textit{A. W. Goodman} et al., Proc. Am. Math. Soc. 21, 273--274 (1969; Zbl 0172.35903) Full Text: DOI