Islam A. M. El-Maddah Walid Abdelmoez Hany H. Ammar Towards Maintainable Architecture for Process Control Applications. 59-66 2007 conf/aiccsa/2007 AICCSA http://dx.doi.org/10.1109/AICCSA.2007.370865 db/conf/aiccsa/aiccsa2007.html#El-MaddahAA07