no. 2
Some properties of simple I-regular semigroups
Compositio Mathematica, Tome 22 (1970) no. 2, pp. 181-195. 
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     author = {Warne, R. J.},
     title = {Some properties of simple $I$-regular semigroups},
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     pages = {181--195},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {22},
     number = {2},
     year = {1970},
     mrnumber = {265495},
     zbl = {0205.02302},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1970__22_2_181_0/}
}
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Warne, R. J. Some properties of simple $I$-regular semigroups. Compositio Mathematica, Tome 22 (1970) no. 2, pp. 181-195. http://archive.numdam.org/item/CM_1970__22_2_181_0/

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