@article{GDZPPN002079976,
title = {On the diophantine equations 2y2 = 7k + 1 and x2 + 11 = 3n.},
journal = {Elemente der Mathematik},
volume = {34},
year = {1979},
pages = {119-121},
zbl = {0415.10013},
url = {http://dml.mathdoc.fr/item/GDZPPN002079976}
}
Inkeri, K. On the diophantine equations 2y2 = 7k + 1 and x2 + 11 = 3n.. Elemente der Mathematik, Tome 34 (1979) pp. 119-121. http://gdmltest.u-ga.fr/item/GDZPPN002079976/