L. Beth Protsko Paul G. Sorenson J. Paul Tremblay Douglas A. Schaefer Towards the Automatic Generation of Software Diagrams. 10-21 http://www.computer.org/tse/ts1991/e0010abs.htm 1991 17 IEEE Trans. Software Eng. 1 db/journals/tse/tse17.html#ProtskoSTS91