Vanyo G. Peychev Jimmy C. Dubuisson Vladimir T. Dimitrov Zhechka A. Toteva Structured Documents Represented by Conceptual Graphs - A Simple Formalism for Presenting Structured Documents. 257-262 2004 conf/icete/2004 ICETE (1) db/conf/icete/icete2004.html#PeychevDDT04