1. A unique low-energy air conditioning system using naturally frozen ice;Kirkpatrick,1981
2. Annual storage of natural ice for commercial building air conditioning;Masoero,1981
3. First annual workshop on ice storage for cooling applications,1981
4. Cooling by means of passively grown ice;Gorski,1981
5. Project icebox—an annual energy storage system;Klassen;ASHRAE Trans.,1981