@article{10_4064_aa124_1_3,
     author = {M. Z. Garaev},
     title = {On the logarithmic factor in error
 term estimates in certain additive congruence problems},
     journal = {Acta Arithmetica},
     pages = {27--39},
     publisher = {mathdoc},
     volume = {124},
     number = {1},
     year = {2006},
     doi = {10.4064/aa124-1-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa124-1-3/}
}