@article{PORMA_1998__55_3_48127,
     author = {Udrea, Gheorghe},
     title = {The diophantine equations .},
     journal = {Portugaliae mathematica},
     pages = {255--259},
     year = {1998},
     volume = {55},
     number = {3},
     zbl = {0912.11014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1998__55_3_48127/}
}