1
Published: 1948
Superior document: Chalmers Tekniska Högskolas handlingar 72
2
Published: 1948
Superior document: Chalmers Tekniska Högskolas handlingar 71
3
Published: 1950
Superior document: Ionospheric effects of solar flares preliminary report 2/3.[1949] (1950)
4
Superior document: Chalmers Tekniska Högskolas handlingar ...
5
Published: 1949
Superior document: Ionospheric effects of solar flares preliminary report 1.1948 (1949)