Le Travail Humain 2002/2 Vol. 65, 2002/2 - pagesPages 97 to 102In memoriamPages 103 to 126Expressing the Effectiveness of Planning HorizonsBy Peter Timmer, John LongPages 127 to 158Periodic Exchange of Tasks Within a Team: Motivation, Exhaustion, or Social Norm?By Pierre-Jean Marescaux, O. DesrichardPages 159 to 190Knowledge Building in Top-Level Athletes at a Competitive InteractionBy Carole Sève, Jacques Saury, Jacques Theureau, Marc DurandPages 191 to 192Book Summaries