@UNPUBLISHED{publication1, title = "Ratio asymptotic for bi-orthogonal matrix polynomials with unbounded recurrence coefficients", author = "{BRANQUINHO, Am{\ยด{i}}lcar} and {GARC{\'{I}}A-ARDILA, Juan C.} and {MARCELL{\'{A}}N, Francisco}", year = "2017-05-22", abstract = " In this work is presented a study on matrix biorthogonal polynomials sequences that satisfy a nonsymmetric recurrence relation with unbounded coefficients. The ratio asymptotic for this family of matrix biorthogonal polynomials is derived in quite general assumptions. It is considered some illustrative examples. ", url = "http://www.mat.uc.pt/preprints/eng\_2017.html", note = "" }