References for Ole Jacob Broch
- J A Seip, Ole Jakob Broch og hans samtid (Gyldendal, Oslo, 1971).
- A Stubhaug, The Mathematician Sophus Lie: It was the Audacity of My Thinking (Springer Science & Business Media, 2013).
- A M Dohl, Ole Jacob Broch, English translation of several Norwegian sources, mainly G C Wasberg and K M Haugland, Private Communication (January 2017).
- G C Wasberg and K M Haugland, Ole Jacob Broch, Norsk Biografisk Leksikon (13 February 2009).