@conference {5691,
	title = {A federate reference structure in an open informational ecosystem},
	booktitle = {OER15 Conference, Cardiff, Wales},
	year = {2015},
	address = {Wales},
	abstract = {The paper will describe a federate ecosystem for OER using the example of the German educational system ,where a variety of ROERs (Muu{\ss}-Merholz \& Schaumburg, 2014) and reference{\textellipsis} 
},
	url = {https://www.researchgate.net/publication/280318233_A_federate_reference_structure_in_an_open_informational_ecosystem},
	author = {Heinen, Richard and Michael Kerres and Schindler, Christoph and Rittberger, Marc}
}
