Resource Planning Heuristics for Service-Oriented Workflows. - Julian Eckert; Deniz Ertogrul; André Miede; Nicolas Repp; Ralf Steinmetz (Web Intelligence, 2008)

The Impact of Service Pricing Models on Service Selection. - Julian Eckert; Deniz Ertogrul; Apostolos Papageorgiou; Nicolas Repp; Ralf Steinmetz (ICIW, 2009)