UdG users
1983 Article
1985 Article
1989 Article
1990 Article
1996 Article
1997 Article
1998 Article
2000-12-15 Thesis
2001 Article
2001-07-23 Thesis
2005-07-18 Thesis
2006 Article
2015 Article
2016-12-14 Article
2017-01 Article
2019 Article