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diff --git a/AUTHORS b/AUTHORS
index 2b67d6cb..6f93b20d 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -22,5 +22,8 @@ Contributors are:
 -Anson Mansfield <anson.mansfield _at_ gmail.com>
 -Ken Odegard <ken.odegard _at_ gmail.com>
 -Alexis Horgix Chotard
+-Piotr Babij <piotr.babij _at_ gmail.com>
+-Mikuláš Poul <mikulaspoul _at_ gmail.com>
+-Charles Bouchard-Légaré <cblegare.atl _at_ ntis.ca>
 
 Portions derived from other open source works and are clearly marked.