Ahmet Tekcan and Arzu Özkoç, Quadratic Irrationals, Quadratic Ideals and Indefinite Quadratic Forms II. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. November 2009, vol. 35(11). 1063 - 1066 [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/2294.