@article{ADM_2012_14_2_a11,
     author = {Claus Michael Ringel and B.-L. Xiong},
     title = {On radical square zero rings},
     journal = {Algebra and discrete mathematics},
     pages = {297--306},
     publisher = {mathdoc},
     volume = {14},
     number = {2},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2012_14_2_a11/}
}