@article{10_4064_aa140_4_2,
     author = {Guangshi L\"u},
     title = {Number of solutions of certain congruences},
     journal = {Acta Arithmetica},
     pages = {317--328},
     publisher = {mathdoc},
     volume = {140},
     number = {4},
     year = {2009},
     doi = {10.4064/aa140-4-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa140-4-2/}
}