Möller, A. W7-X: Operations (OP), Max Planck Institute for Plasma Physics, Max Planck Society;
http://dx.doi.org/10.1016/j.jvoice.2016.03.016 (Publisher version)
Salmen, T., Ermakova, T., Möller, A., Seipelt, M., Weikert, S., Rummich, J., et al. (2017). The Value of Vocal Extent Measure (VEM) Assessing Phonomicrosurgical Outcomes in Vocal Fold Polyps. Journal of Voice, 31(1), 114.e7-114.e15. doi:10.1016/j.jvoice.2016.03.016.