@article{10_4064_aa137_2_1,
     author = {Constantin N. Beli},
     title = {Two conjectures by {Zhi-Hong} {Sun}},
     journal = {Acta Arithmetica},
     pages = {99--131},
     publisher = {mathdoc},
     volume = {137},
     number = {2},
     year = {2009},
     doi = {10.4064/aa137-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa137-2-1/}
}