@article{GDZPPN002349124,
title = {On the Diophantine Equation Ax4 -By2 = C (C = 1, 4).},
journal = {Mathematica Scandinavica},
volume = {20},
year = {1967},
pages = {149-158},
zbl = {0169.37302},
url = {http://dml.mathdoc.fr/item/GDZPPN002349124}
}
Ljunggren, W. On the Diophantine Equation Ax4 -By2 = C (C = 1, 4).. Mathematica Scandinavica, Tome 20 (1967) pp. 149-158. http://gdmltest.u-ga.fr/item/GDZPPN002349124/