Chapter 16 of Practical RDF Plugged In Software's Tucana KnowledgeStore. She has even included two diagrams from our marketing material. Cool! There's also some mention of other companies like Adobe and Intellidimension.
"Bottom line: the power of TKS is just that -- power. By combining simple and intuitive interface with an architecture that's built from the ground up for large-scale data queries, the application is meant to get you up and running, quickly, and to you running, quickly." It is kinda embarrassing to get such a positive review.