@base . a , ; "Research notes in mathematics" . a . a ; . a ; "0743-0337" ; . a ; "0743-0337" ; . a , , ; , , ; "Research notes in mathematics." ; ; ; "0743-0337" ; ; "0743-0337" ; ; "0743-0337" ; "Research notes in mathematics" , "Research notes in mathematics." ; . . a ; ; "20050916110100.0"^^ ; ; . "Massachusetts" .