 Bruun and Devik released "Lærebok i fysikk for realskolen og de to første klassene i gymnaset" (1939, later reissued) and "Lærebok i fysikk for ungdomsskolen" (1964, later reissued).In 1931 Devik published the thesis "Thermische und dynamische Bedingungen der Eisbildung in Wasserläufen", which earned him the dr.philos.degree in 1932.