@article{10_4064_sm_34_3_253_263,
     author = {S. Drury},
     title = {On non-triangular sets in tensor algebras},
     journal = {Studia Mathematica},
     pages = {253--263},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {1970},
     doi = {10.4064/sm-34-3-253-263},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-34-3-253-263/}
}