@article {1324740, title = {Unification of problem solving environment implementation layers with XML-based specifications}, journal = {Adv. Eng. Softw.}, volume = {39}, number = {3}, year = {2008}, pages = {189{\textendash}201}, publisher = {Elsevier Science Ltd.}, address = {Oxford, UK, UK}, keywords = {databases, problem solving, XML}, issn = {0965-9978}, doi = {http://dx.doi.org/10.1016/j.advengsoft.2007.02.005}, author = {Shu, Jiang and Watson, Layne T. and Ramakrishnan, Naren and Kamke, Frederick A. and North, Chris} }