@article{10_4064_cm_23_1_165_171,
     author = {Thomas A. Brown and Joel H. Spencer},
     title = {Minimization of \ensuremath{\pm}1 matrices under line shifts},
     journal = {Colloquium Mathematicum},
     pages = {165--171},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1971},
     doi = {10.4064/cm-23-1-165-171},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-23-1-165-171/}
}