@Article{Haehnel:2019:EdisonTremolo,
  author    = {Hähnel, Tilo and Martensen, Karin},
  title     = {{How Thomas A. Edison shaped today's singing ideal: Tracking his ambiguous concept of tremolo by analysing archival documents and sound recordings.}},
  journal   = {Empirical Musicology Review},
  year      = {2019},
  volume    = {14},
  number    = {1--2},
  pages     = {22--49},
  doi       = {10.18061/emr.v14i1-2.6689},
  url       = {http://dx.doi.org/10.18061/emr.v14i1-2.6689},
}