Environmental information systems - Appropriate for a transfer into upcoming countries in South East Asia? - Elke Perl; Stefan Vorbach (EnviroInfo (1), 2004)

Inter-Company Communication of Environmental Information: an Empirical Investigation Based on Transaction Cost Theory. - Elke Perl; Alfred Posch (EnviroInfo, 2006)

Environmental information systems for recycling networks - a case study of the eco-industrial cluster Mödling. - Elke Perl-Vorbach (EnviroInfo (2), 2009)