An article about DRI appears in The Professional Edge, the magazine of the Association of Professional Engineers & Geoscientists of Saskatchewan (Issue 103, July/August 2006, beginning page 10).
Un article sur l’IRS figure dans "The Professional Edge", le magazine de l’ "Association of Professional Engineers & Geoscientists of Saskatchewan" (Numéro 103, juillet/août 2006, débutant à la page 10).