@article{378181, recid = {378181}, author = {Shapiro, Maurice M. and Stanev, Todor. and Wefel, J. P.}, title = {Astrophysics at ultra-high energies International School of Cosmic Ray Astrophysics, 15th course, Erice, Italy, 20-27 June 2006 / [electronic resource] :. International School of Cosmic-Ray Astrophysics}, publisher = {World Scientific,}, address = {Singapore ;}, pages = {ix, 226 p. :}, year = {2007}, url = {http://library.usi.edu/record/378181}, }