author = { Martin, Leslie A. Forrester, Jay Wright },

title = { The first step },

publisher = {MIT},

year = {2001},

abstract = {Beginner modeling exercises Leslie A.Martin},

booktitle = {Road maps - a guide to Learning System Dynamics / System Dynamics in Education Projekt; System Dynamics Group ....[prep. by Jay W. Forrester] ; 2},

address = { Cambridge, Mass. },

url = { http://slubdd.de/katalog?TN_libero_mab2 }