@article{10_4064_aa_15_1_77_84,
     author = {John Hardy},
     title = {A note on the representability of binary quadratic forms with {Gaussian} integer coefficients as sums of squares of two linear forms},
     journal = {Acta Arithmetica},
     pages = {77--84},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1968},
     doi = {10.4064/aa-15-1-77-84},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-15-1-77-84/}
}