@article{RSMUP_2011__126__47_0,
     author = {Veneziano, Francesco},
     title = {Quadratic integral solutions to double {Pell} equations},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {47--61},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {126},
     year = {2011},
     mrnumber = {2918198},
     zbl = {1273.11056},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_2011__126__47_0/}
}