@article{10_4064_aa8630_4_2017,
     author = {Xiang-Zi Meng and Zhi-Wei Sun},
     title = {Sums of four polygonal numbers with coefficients},
     journal = {Acta Arithmetica},
     pages = {229--249},
     publisher = {mathdoc},
     volume = {180},
     number = {3},
     year = {2017},
     doi = {10.4064/aa8630-4-2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa8630-4-2017/}
}