An interactive multi-factor procedure for two-level financial planning with conflicting goals / M. Goedhart, H. Schaffers, J. SpronkMulti-factor financial planning: an outline and illustration / M.H. Goedhart, J. SpronkInteractive multiple goal programming with fractional goals / Marc H. Goedhart and Jaap SpronkPlanning in decentralized organizations : a seven-league boots approach / Marc Goedhart and Jaap SpronkInteractive decentralized planning : some numerical experiments / Marc Goedhart and Jaap SpronkFinancial planning in divisionalised firms : models and methods / Marc H. GoedhartFinancial planning in divisionalised firms : models and methods / Marcus Henricus Goedhart