1. Reflection of Water Waves from Floating Ice in Water of Finite Depth;Weitz;Communications on Pure and Applied Mathematics,1950
2. The Coupling of Two Acoustical Ducts;Heins;Journal of Mathematics and Physics,1947
3. Water Waves over a Channel of Finite Depth with a Dock;Heins;American Journal of Mathematics,1948
4. Water Waves over a Channel of Finite Depth;Heins;Canadian Journal of Mathematics,1950