Transkription:
HELLGREN
Gösta
Se: Chalmers tekniska högskolas handlingar.
Underv. Sv
Facksk.
Tekn. Gateborg
130. The propagation of electromagnetic waves along a conlcal helix
with variable pitch. 1953.
181. The Swedish radioscientific solar eclipse expedition to Italy
1952. Preliminary report by S. I. Svensson... and O. Perers. 1956.