@article{10_1017_S0017089502030021,
     author = {Camillo, Victor and Sim\'on, Juan Jacobo},
     title = {The {Nicholson-Varadarajan} {Theorem} on {Clean} {Linear} {Transformations}},
     journal = {Glasgow mathematical journal},
     pages = {365--369},
     year = {2002},
     volume = {44},
     number = {3},
     doi = {10.1017/S0017089502030021},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089502030021/}
}