@article{CSIS_2014_11_1_a21,
     author = {Alexander Nussbaumer and Daniel Dahrendorf and Hans-Christian Schmitz and Milos Kravc{\i}k and Marcel Berthold and Dietrich Albert},
     title = {Recommender and {Guidance} {Strategies} for {Creating} {Personal} {Mashup} {Learning} {Environments}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2014},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2014_11_1_a21/}
}