Academic references to Cherryleaf

We found out yesterday that our work has been referenced in another two academic papers (http://www.cranfield.ac.uk/sims/mem/rick/pdfs/e_smart_report1.pdf and
http://www.acsg.mcmaster.ca/group/techreps.acg/CAS03-15-SP.pdf), which is (1) pleasant and (2) a surprise.