In truth, I looked around the DZone article (which is how it is referred to on the DZone site). When I couldn't find a readily visible link to the original, I assumed is was content written on the DZone site, much like articles on CodeProject (as opposed to technical blog links on CodeProject, where there is a clearly identified link to the source).

My bad, but please know I understood the guideline, just not the page I was linking to . . .