Links
[1] https://soft.vub.ac.be/soft/members/cderoove
[2] https://soft.vub.ac.be/soft/members/cfscholl
[3] https://soft.vub.ac.be/soft/biblio?f%5Bauthor%5D=35
[4] https://soft.vub.ac.be/soft/members/tjdhondt
[5] https://soft.vub.ac.be/soft/biblio?f%5Bauthor%5D=299