There is an explanation, system diagram, equations, graph and a program for for each model,
besides that, questions that ask "what would happen if ...".
Main author let us publish this workbook in internet for Portuguese and Spanish readers
Laboratory of Ecological Engineering and Computing - LEIA - Unicamp
Enrique Ortega, Mileine Furlanetti de Lima Zanghetin
Campinas, SP, July 20, 2007