@article{IM_1972__17_142155,
     author = {Larry J. Gerstein},
     title = {Orthogonal {Decomposition} of {Modular} {Quadratic} {Forms.}},
     journal = {Inventiones mathematicae},
     pages = {21--30},
     publisher = {mathdoc},
     volume = {17},
     year = {1972},
     zbl = {0244.15011},
     url = {http://geodesic.mathdoc.fr/item/IM_1972__17_142155/}
}