@article{DMGAA_2000_20_2_a4,
     author = {Cao, Zhenfu and Dong, Xiaolei},
     title = {Diophantine equations and class number of imaginary quadratic fields},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {199--206},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2000_20_2_a4/}
}