Greenfield, Sidney M. (1983). "Modular elliptic curves and Fermat's Last Theorem". Luso-Brazilian Review. 20 (1). University of Wisconsin Press: 44–64. ISSN1548-9957. JSTOR3513217.
Greenfield, Sidney M. (1983). "Modular elliptic curves and Fermat's Last Theorem". Luso-Brazilian Review. 20 (1). University of Wisconsin Press: 44–64. ISSN1548-9957. JSTOR3513217.