@article{ZNSL_2014_423_a8,
     author = {Edmond W. H. Lee},
     title = {Inherently non-finitely generated varieties of aperiodic monoids with central idempotents},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {166--182},
     publisher = {mathdoc},
     volume = {423},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2014_423_a8/}
}