The Proceedings of the International Congress on International Environmental Modelling and Software (iEMSs 2010) are available here: http://www.iemss.org/iemss2010/proceedings.html
The proceedings are also available as three separate volumes, with page numbers:
How to cite
David A. Swayne, Wanhong Yang, Alexey A. Voinov, Andrea Rizzoli, Tatiana Filatova (Eds.)
Proceedings of the iEMSs Fourth Biennial Meeting: International Congress on Environmental Modelling and Software (iEMSs 2010). International Environmental Modelling and Software Society, Ottawa, Canada, July 2010.ISBN: 978-88-903574-1-1