Somluck La-Ongsri John F. Roddick Denise de Vries Accommodating mesodata into conceptual modelling methodologies. 424-435 2008 50 Information & Software Technology 5 http://dx.doi.org/10.1016/j.infsof.2007.05.001 db/journals/infsof/infsof50.html#La-OngsriRV08