@article {Vel86c,
AUTHOR = {Veli{\v{c}}kovi{\'c}, Boban},
TITLE = {Definable automorphisms of {${\scr P}(\omega)/{\rm fin}$}},
JOURNAL = {Proc. Amer. Math. Soc.},
FJOURNAL = {Proceedings of the American Mathematical Society},
VOLUME = {96},
YEAR = {1986},
NUMBER = {1},
PAGES = {130--135},
}