author = { Karras, Matti AND Puustinen, T. },

title = { On the calibration of seismographs with the sine wave method and its comparison to the Willmore's bridge method },

publisher = {Suomalainen Tiedeakatemia},

year = {1966},

abstract = {Literaturangaben},

booktitle = {Annales Academiae Scientiarum Fennicae ; Series A. 6, Physica ; 217},

address = { Helsinki },

url = { http://slubdd.de/katalog?TN_libero_mab2 }