Nominal and Structural Subtyping in Component-Based Programming by Klaus Ostermann In Journal of Object Technology 7(1): , 2008. Citation as BibTeX @article{ostermann08nominal, author = {Ostermann, Klaus}, title = {Nominal and Structural Subtyping in Component-Based Programming}, journal = {Journal of Object Technology}, year = {2008}, volume = {7}, number = {1}, pages = {121–145}, url = {http://www.jot.fm/issues/issue_2008_01/article4/} }