%0 Journal Article %T Learning hydrodynamics with Yogiro Hama %A Navarra %A F. S. %J Brazilian Journal of Physics %D 2007 %I Scientific Electronic Library Online %R 10.1590/S0103-97332007000100003 %X as part of the celebration of his 70th birthday, i review the works done in collaboration with prof. yogiro hama and try to recover the history of some of his ideas concerning the formation of a fluid in high energy hadronic collisions, its expansion and dissociation. i show how these ideas evolved and how they are relevant for understanding the present experimental data. %K relativistic hydrodynamics %K multiparticle production %K high energy hadronic collisions. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-97332007000100003&lng=en&nrm=iso&tlng=en