@ARTICLE{publication1, title = "Characterizations of classical orthogonal polynomials on quadratic lattices", author = "{AREA, I.} and {BRANQUINHO, Am{\ยด{i}}lcar} and {FOUPOUAGNIGNI, Mama} and {SANDJON, Marlyse Njinkeu}", year = "2017-04", abstract = " ", journal = "Journal of Difference Equations and Applications", volume = "23", number = "6", pages = "983-1002", url = "http://www.tandfonline.com/doi/full/10.1080/10236198.2017.1307972" }