@article{GDZPPN002357372,
title = {Squares in arithmetical progressions I.},
journal = {Mathematica Scandinavica},
volume = {53},
year = {1983},
pages = {5-19},
zbl = {0511.10014},
url = {http://dml.mathdoc.fr/item/GDZPPN002357372}
}
Cohn, J.H.E. Squares in arithmetical progressions I.. Mathematica Scandinavica, Tome 53 (1983) pp. 5-19. http://gdmltest.u-ga.fr/item/GDZPPN002357372/