%0 Journal Article %A Delgado J.L. %A Filippone S. %A Martín-Domenech A. %A Altable M. %A Maroto E. %A Langa F. %A Martín, Nazario %A Martínez-Alvarez R. %T Mass spectrometry studies of the retro-cycloaddition reaction of pyrrolidino and 2-pyrazolinofullerene derivatives under negative esi conditions %D 2011 %U http://hdl.handle.net/20.500.12614/961 %~