Tony Printezis Malcolm P. Atkinson Mick J. Jordan Defining and Handling Transient Fields in PJama. 129-151 http://link.springer.de/link/service/series/0558/bibs/1949/19490129.htm 1999 conf/dbpl/1999 DBPL db/conf/dbpl/dbpl1999.html#PrintezisAJ99