@article{10_1017_S0017089500020140,
     author = {S\'ANCHEZ, F\'ELIX CABELLO},
     title = {NEARLY {VARIANTS} {OFPROPERTIES} {AND} {ULTRAPOWERS}},
     journal = {Glasgow mathematical journal},
     pages = {275--281},
     year = {2000},
     volume = {42},
     number = {2},
     doi = {10.1017/S0017089500020140},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500020140/}
}