Over 350 publications in main topics of research interests given above including papers in IEEE Trans. on Computers, Euromicro, Lecture Notes in Computer Science, chapters in books issued by Chapman and Hall, LNH Elsevier, Nova Science, Springer – Verlag and presentations in many IEEE conference proceedings and also scientific lectures given in many universities such as University of Oulu (Finland), New Hampshire University (USA), University of Basrah (Irag), Izmir University (Turkey), Autonomous University of Barcelona (Spain), Bristol University (England), Nova University of Lisbon (Portugal), Lecee University (Italy) and the book entitled Analysis and Testing of Distributed Software Applications issued by RSP London in cooperation with John Wiley & Sons.