Mixed mode crack propagation : proceedings of the first USA-Greece symposium, held at the Athens National Technical University Athens, Greece August 18-22, 1980 / G.C. Sih, P.S. TheocarisRecent advances in mechanics / Anthony N. Kounadis and Emmanuel E. Gdoutos (eds.)Recent advances in mechanics / Anthony N. Kounadis and Emmanuel E. Gdoutos (eds.)Compendium in astronomy : a volume dedicated to professor John Xanthakis on the occasion of completing twenty-five years of scientific activities as Fellow of the National Academy of Athens / ed. by Elias G. Mariolopoulos, Pericles S. Theocaris...[et al.]Interrelations between processing structure and properties of polymeric materials / edited by James C. Seferis, Pericles S. Theocaris