Stelkens, U., Weiß, W., & Mirschberger, M. (2012). The Implementation of the EU Services Directive: Transposition, Problems and Strategies. T. M. C. Asser Press. https://doi.org/10.1007/978-90-6704-840-8

Stelkens, Ulrich, Wolfgang Weiß, and Michael Mirschberger. The Implementation of the EU Services Directive: Transposition, Problems and Strategies. The Hague, The Netherlands: T. M. C. Asser Press, 2012. https://doi.org/10.1007/978-90-6704-840-8.

Stelkens, Ulrich, et al. The Implementation of the EU Services Directive: Transposition, Problems and Strategies. T. M. C. Asser Press, 2012. https://doi.org/10.1007/978-90-6704-840-8.