Helen Schonenberg Barbara Weber Boudewijn F. van Dongen Wil M. P. van der Aalst Supporting Flexible Processes through Recommendations Based on History. 51-66 2008 BPM http://dx.doi.org/10.1007/978-3-540-85758-7_7 conf/bpm/2008 db/conf/bpm/bpm2008.html#SchonenbergWDA08