Milovanovi? G.V.Öztürk G.Aktaş R.2020-03-262020-03-2620200126-6705https://dx.doi.org/10.1007/s40840-019-00750-8https://hdl.handle.net/20.500.12395/38696The present paper deals with various recurrence relations, generating functions and series expansion formulas for two families of orthogonal polynomials in two variables, given Laguerre–Laguerre Koornwinder polynomials and Laguerre–Jacobi Koornwinder polynomials in the limit cases. Several families of bilinear and bilateral generating functions are derived. Furthermore, some special cases of the results presented in this study are indicated. © 2019, Malaysian Mathematical Sciences Society and Penerbit Universiti Sains Malaysia.en10.1007/s40840-019-00750-8info:eu-repo/semantics/closedAccessBilateral generating functionBilinear generating functionGenerating functionJacobi polynomialsLaguerre polynomialsArticle43214031431Q2WOS:000526029300023Q1