http://doi.acm.org/10.1145/273244.273265 db/journals/sigmod/KoksalAD98.html Pinar Koksal Sena Nural Arpinar Asuman Dogac Workflow History Management. 67-75 sigmodR/27-1/P067.pdf 1998 27 SIGMOD Record 1 db/journals/sigmod/sigmod27.html#KoksalAD98 http://www.acm.org/sigmod/record/issues/9803/koksal.ps ... ... journals/dpd/EvrendilekDNO97 ... books/mk/Cattell96 ... ... conf/cikm/OzcanNKED96 books/mk/elmagarmid92/WachterR92 ... ...