@article{DCG_1993__10_2_131256,
     author = {A.I. Barvinok},
     title = {Feasibility {Testing} for {Systems} of {Real} {Quadratic} {Equations.}},
     journal = {Discrete & computational geometry},
     pages = {1--14},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1993},
     zbl = {0812.12006},
     url = {http://geodesic.mathdoc.fr/item/DCG_1993__10_2_131256/}
}