1. Mining-induced rock mass subsidence;Awierszyn,1947
2. Problem of mining subsidence prediction;Bals,1931
3. BW Prosper Haniel measurements point – “Schwarze Heide”;Deutsche Montan Technologie GmbH (DMT),2001
4. Calculations of surface subsidence in Emscher;Keinhorst,1925
5. Time influence on shaping of subsidence trough;Knothe;Archive of Mining Science,1953