F. Moelaert El-Hadidy W. B. Teeuw H. Bakker An innovative approach for designing collaborative applications using OpenDoc: from theory to practice. 42-52 1997 SEE http://dx.doi.org/10.1109/SEE.1997.591816 conf/see/1997 db/conf/see/see1997.html#El-HadidyTB97