@article{10_1017_S0017089500020176,
     author = {COUTINHO, S. C.},
     title = {QUADRATIC {OPERATORS} {DONOT} {GENERATE} {MAXIMAL} {LEFT} {IDEALS} {OF} {THE} {WEYL} {ALGEBRA}},
     journal = {Glasgow mathematical journal},
     pages = {297--298},
     year = {2000},
     volume = {42},
     number = {2},
     doi = {10.1017/S0017089500020176},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500020176/}
}