Mustafa Atici On The Edge Geodetic Number of a Graph. 853-861 2003 80 Int. J. Comput. Math. 7 http://taylorandfrancis.metapress.com/openurl.asp?genre=article&issn=0020-7160&volume=80&issue=7&spage=853 db/journals/ijcm/ijcm80.html#Atici03