Lamiaa Fattouh Ibrahim Olaa Metwaly Amira Kapel Agsan Ahmed Enhancing the Behavior of the Ant Algorithms to Solving Network Planning Problem. 250-255 2005 conf/sera/2005 SERA http://doi.ieeecomputersociety.org/10.1109/SERA.2005.39 db/conf/sera/sera2005.html#IbrahimMKA05