1. Cities of the future and planning for subsurface utilization;Barker;Underground Space,1982
2. Underground storage pits in Morocco;Bartali;Tunnelling and Underground Space Technology,1987
3. Habitability and energy performance of earth-sheltered dwellings;Boyer,1983
4. Storing water in rock caverns;Broch;Underground Space,1983
5. The OASIS 2000 model: a rural earth-sheltered energy park;Ellsworth;Underground Space,1981