Michael E. Caspersen Jürgen Börstler Adrienne Decker Carl Alphonce Worked examples for sound OO pedagogy: the seventh "killer examples" workshop. 781-782 2008 OOPSLA Companion https://doi.org/10.1145/1449814.1449859 conf/oopsla/2008c db/conf/oopsla/oopsla2008c.html#CaspersenBDA08