Singer, W. Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;
http://link.springer.com/chapter/10.1007%2F978-3-319-11128-5_231 (Any fulltext)
Merkel, N., Bland, G., Wibral, M., & Singer, W. (2015). Changing High Frequency Oscillatory Patterns in Early Visual Cortex with MEG Neurofeedback. In I. Lacković, & D. Vasic (Eds.), 6th European Conference of the International Federation for Medical and Biological Engineering (pp. 930-933). Springer International Publishing.