@mastersthesis{schubert08,
        title = {Dynamic Contract Layers},
        author = {Christian Schubert},
        note = {(unpublished)},
        school = {Hasso-Plattner-Institut Potsdam},
        type = {Master's thesis},
        year = 2008,
        biburl = {http://www.bibsonomy.org/bibtex/2de39c772ff5e9084bc8a9e3df2eac4e5/schmidtwisser},
	keywords = {python master contextpy}
}