@book{Helmholtz2018,
author = {Helmholtz, Hermann von},
editor = {Schneider, Hans},
year = {2018},
language = {ger},
copyright = {https://creativecommons.org/public-domain/cc0/},
title = {Die Tatsachen in der Wahrnehmung},
url = "http://dx.doi.org/10.17169/refubium-1241",
}