@article{10_4064_aa146_3_5,
     author = {Zhi-Hong Sun},
     title = {Binary quadratic forms and sums of triangular numbers},
     journal = {Acta Arithmetica},
     pages = {257--297},
     publisher = {mathdoc},
     volume = {146},
     number = {3},
     year = {2011},
     doi = {10.4064/aa146-3-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa146-3-5/}
}