@article{ERMS:SourceID:145932, author = {Östergren, H.}, journal = {Öfversigt af Kongelige Vetenskaps-Akademiens Förhandlingar}, pages = {111-120}, title = {Das System der Synaptiden}, url = {http://www.marbef.org/data/aphia.php?p=sourcedetails&id=145932}, volume = {55}, year = {1898} }