1. KARAGOUNIS, A., Commissions 1 et 2, Louvain. Annexe 1956–2 au Bull. I.I.F.
2. Heat Transfer to Boiling Helium
3. DOREY, A.P., Cryogenics June 1965, p. 146.
4. FREDERKING, T., Prom. Nr. 3007 ETH — Zurich, Special Edition printed by VDI-Verlag Duesseldorf “ Research in the Field of Engineering” Vol. 27, Bookl. 17, Book 2,58(1961).