@article{10_4064_aa_80_1_77_82,
     author = {Hong Yu},
     title = {On {Waring's} problem with quartic polynomial summands},
     journal = {Acta Arithmetica},
     pages = {77--82},
     publisher = {mathdoc},
     volume = {80},
     number = {1},
     year = {1997},
     doi = {10.4064/aa-80-1-77-82},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-80-1-77-82/}
}