TY - JOUR AU - Ramírez Uclés, Rafael PY - 2007 UR - http://hdl.handle.net/10481/64723 AB -  Both the purpose and the essence of this contest are described in this introduction.  -The purpose is to promote the solidarity among our students, not only by means of economic contributions, but also by convincing them that the result of small... LA - eng PB - ESA (European Space Agency) TI - Psycho-probability: a solidarity application ER -