Machado da Silva, Fausto Tangents to a conic. (Portuguese) Zbl 0222.50022 Gac. Mat., Madrid 22, 93-97 (1970). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 51N15 Projective analytic geometry PDFBibTeX XMLCite \textit{F. Machado da Silva}, Gac. Mat., Madrid 22, 93--97 (1970; Zbl 0222.50022) Full Text: EuDML