@article{10_21136_CMJ_1969_100878,
     author = {Kapp, Kenneth M.},
     title = {Green's relations and quasi-ideals},
     journal = {Czechoslovak Mathematical Journal},
     pages = {80--85},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {1969},
     doi = {10.21136/CMJ.1969.100878},
     mrnumber = {0238972},
     zbl = {0179.03901},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1969.100878/}
}