European Space Policy Institute, SpringerLink (Online service), Schrogl, K., Mathieu, C., & Peter, N. (2009). Yearbook on Space Policy 2007/2008: From Policies to Programmes. Springer Vienna. https://doi.org/10.1007/978-3-211-99091-9

European Space Policy Institute, SpringerLink (Online service), Kai-Uwe Schrogl, Charlotte Mathieu, and Nicolas Peter. Yearbook on Space Policy 2007/2008: From Policies to Programmes. Vienna: Springer Vienna, 2009. https://doi.org/10.1007/978-3-211-99091-9.

European Space Policy Institute, et al. Yearbook on Space Policy 2007/2008: From Policies to Programmes. Springer Vienna, 2009. https://doi.org/10.1007/978-3-211-99091-9.