Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_2012_26_1-2_a1, author = {L. Apostolova}, title = {Hyperbolic {Fourth-R} {Quadratic} {Equation} and {Holomorphic} {Fourth-R} {Polynomials}}, journal = {Mathematica balkanica}, pages = {15}, publisher = {mathdoc}, volume = {26}, number = {1-2}, year = {2012}, url = {http://geodesic.mathdoc.fr/item/MABA_2012_26_1-2_a1/} }
L. Apostolova. Hyperbolic Fourth-R Quadratic Equation and Holomorphic Fourth-R Polynomials. Mathematica balkanica, Tome 26 (2012) no. 1-2, p. 15. http://geodesic.mathdoc.fr/item/MABA_2012_26_1-2_a1/