@book{PPN236020595, title = {Nachtraege zur Physik, Chronologie und Astronomie Bd.11, Abt.1}, series = {GDML\_Books}, year = {1927}, language = {lat}, url = {http://dml.mathdoc.fr/item/PPN236020595} }
(éd.). Nachtraege zur Physik, Chronologie und Astronomie Bd.11, Abt.1. GDML_Books (1927), http://gdmltest.u-ga.fr/item/PPN236020595/