https://www.youtube.com/playlist?list=PLe-zqV0YVbgkJkoMsL6znbYo4rZsQfjWv
https://www.youtube.com/playlist?list=PLK_KcpmFXd1HqZPFd0GrWUrN0trMN8wf2
https://www.youtube.com/playlist?list=PLqgByAmrQLo8DYIaENgclNDUQoDo0WHMI
https://edizionicafoscari.unive.it/media/pdf/books/978-88-6969-474-5/978-88-6969-474-5_svXINjT.pdf
https://www.igeacps.it/corso/corso-online-gratuito-la-lingua-dei-segni-italiana-lis/
https://web.archive.org/web/20070915111238/http://www.istc.cnr.it/mostralis/docs/biblis.pdf
https://web.archive.org/web/20070915111317/http://www.istc.cnr.it/mostralis/docs/biblisalfa.pdf