Karol Lisowski Andrzej Czyzewski Modelling Object Behaviour in a Video Surveillance System Using Pawlak's Flowgraph. 122-136 2014 MCSS https://doi.org/10.1007/978-3-319-07569-3_10 conf/mcss2/2014 db/conf/mcss2/mcss2014.html#LisowskiC14