Quadratic Diophantine equation x 2 - ( t 2 - t ) y 2 - ( 4 t - 2 ) x + ( 4 t 2 - 4 t ) y = 0 . Özkoç, Arzu, Tekcan, Ahmet (2010) Bulletin of the Malaysian Mathematical Sciences Society. Second Series
Quadratic integral solutions to double Pell equations Francesco Veneziano (2011) Rendiconti del Seminario Matematico della Università di Padova