Bruno Laguë Charles Leduc André Le Bon Ettore Merlo Michel Dagenais An Analysis Framework for Understanding Layered Software Architectures. 37-44 1998 conf/iwpc/1998 IWPC http://dlib2.computer.org/conferen/iwpc/8560/pdf/85600037.pdf db/conf/iwpc/iwpc1998.html#LagueLBMD98