@article{RSMUP_1984__72__21_0,
     author = {Gabutti, Bruno},
     title = {Products of several {Jacobi} or {Laguerre} polynomials},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {21--25},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {72},
     year = {1984},
     mrnumber = {778330},
     zbl = {0554.33004},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1984__72__21_0/}
}