中国科学院数学与系统科学研究院期刊网
The Number of Solutions of the Generalized Ramanujan-Nagell Equation x~2-D=3n
杨继明;
Acta Mathematica Sinica, Chinese Series . 2008, (2): 351 -356 .  DOI: 10.12386/A2008sxxb0041