@article{MM2_1997__94_2_156325,
     author = {Pavel Guerzhoy},
     title = {A note on quadratic congruences.},
     journal = {Manuscripta mathematica},
     pages = {89--94},
     publisher = {mathdoc},
     volume = {94},
     number = {2},
     year = {1997},
     zbl = {0933.11025},
     url = {http://geodesic.mathdoc.fr/item/MM2_1997__94_2_156325/}
}