Masayuki Abe Masayuki Kanda A Key Escrow Scheme with Time-Limited Monitoring for One-way Communication Masayuki Abe and Masayuki Kanda. 661-671 2002 45 Comput. J. 6 http://www3.oup.co.uk/computer_journal/hdb/Volume_45/Issue_06/450661.sgm.abs.html db/journals/cj/cj45.html#AbeK02