1. Jordkärnan - ett aktuellt geofysiskt problem (The Earth's Core - A Modern Geophysical Problem);Båth;Föreningen för Filosofi och Specialvetenskap,1954
2. Observations on Recorded Ground Motion Due to P, PcP, S, and ScS;Ergin;Bull. Seism. Soc. Am.,1952
3. Amplitudes of PcP, PcS, ScS, and ScP in Deep-Focus Earthquakes;Ergin;Bull. Seism. Soc. Am.,1953
4. PKKP, P'P, and the Earth's Core;Gutenberg;Trans. Am. Geophys. Un.,1951