1. Open Riemann surfaces and extremal problems on compact subregions;['Ahlfors, Lars V.'];Comment. Math. Helv.,1950
2. [2] Arbarello, Enrico; Cornalba, Maurizio; Griffiths, Phillip A.; Harris, Joe Geometry of algebraic curves. Vol. I, Grundlehren der Mathematischen Wissenschaften, Volume 267, Springer, 1985, xvi+386 pages
3. Indice de Clifford des intersections complètes de l’espace;['Basili, Bénédicte'];Bull. Soc. Math. Fr.,1996
4. Polynomials with the half-plane property and matroid theory;['Brändén, Petter'];Adv. Math.,2007
5. Homogeneous multivariate polynomials with the half-plane property;['Choe, Young-Bin', 'Oxley, James G.', 'Sokal, Alan D.', 'Wagner, David G.'];Adv. Appl. Math.,2004