- http://dit.unitn.it/~gtrecari/weblanguages/lab11/BPEL-First-Part-(Introducing-Oracle-BPM).pdf
- https://docs.oracle.com/cd/B14099_19/integrate.1012/b14448/deployproc.htm
- https://docs.oracle.com/cd/E25178_01/dev.1111/e10224/fod_intro2.htm
https://www.youtube.com/watch?v=0BtEH4psjVA https://www.youtube.com/watch?v=KkcRa2q3gqI&t=498s https://www.youtube.com/watch?v=cCWpGUL7jYA https://www.youtube.com/watch?v=IaiKRoSnLmk