@article{10_4064_aa141_3_4,
     author = {Ay\c{s}e Alaca and \c{S}aban Alaca and Faruk Uygul and Kenneth S. Williams},
     title = {Representations by sextenary
 quadratic forms whose coefficients are 1, 2 and 4},
     journal = {Acta Arithmetica},
     pages = {289--309},
     publisher = {mathdoc},
     volume = {141},
     number = {3},
     year = {2010},
     doi = {10.4064/aa141-3-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa141-3-4/}
}