1. The influence of the support resistance on the reduction of the cross-section of roadways;Jahns;Glückauf,1962
2. Model tests illustrating the effects of different roadway supports;Jacobi,1960
3. The International Congress for Rock Pressure Research in Paris, 1960;Kuhn;Glückauf,1961
4. Ring support for roof control in roadways subject to heavy pressure;Goossens;Glückauf,1962