@Article{ APARICIO_OCAÑA_PAYÁ_RODRIGUEZ:121-137,

author = { CAMILO APARICIO DEL PRADO and FRANCISCO G. OCAÑA OCAÑA and RAFAEL PAYÁ ALBERT and ANGEL RODRIGUEZ PALACIOS } ,

title = { A NON-SMOOTH EXTENSION OF FRÉCHET DIFFERENTIABILITY OF THE NORM WITH APPLICATIONS TO NUMERICAL RANGES },

journal = { GLASGOW MATHEMATICAL JOURNAL },

year = { 1986 },

volume = { 28 },

issn = { 0017-0895 },

pages = { 121-137 },

}