@article{CM_1970__22_2_181_0,
     author = {Warne, R. J.},
     title = {Some properties of simple $I$-regular semigroups},
     journal = {Compositio Mathematica},
     pages = {181--195},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {22},
     number = {2},
     year = {1970},
     mrnumber = {265495},
     zbl = {0205.02302},
     language = {en},
     url = {http://www.numdam.org/item/CM_1970__22_2_181_0/}
}