中国科学院数学与系统科学研究院期刊网
On the Diophantine Equation aX4-bY2=1
Ping Zhi YUAN, Zhong Feng ZHANG
Acta Mathematica Sinica, Chinese Series . 2010, (3): 443 -454 .  DOI: 10.12386/A2010sxxb0050