Open Access
@article{119764,
  author       = {Kirschmann, August},
  title        = {{Ein photometrischer Apparat zu psychophysischen 
                   Zwecken}},
  journal      = {Philosophische Studien},
  year         = 1889,
  volume       = 5,
  pages        = {292-300},
  language     = {de},
  url          = {https://vlp-new.ur.de/records/lit4163}
}
