@article{10_4064_aa_45_4_319_328,
     author = {R. Cook and S. Raghavan},
     title = {On positive definite quadratic polynomials},
     journal = {Acta Arithmetica},
     pages = {319--328},
     publisher = {mathdoc},
     volume = {45},
     number = {4},
     year = {1985},
     doi = {10.4064/aa-45-4-319-328},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-45-4-319-328/}
}