1. An investigation of geriatric nursing problems in hospital;Norton,1962
2. Mattresses for preventing pressure sores in geriatric patients;Bliss;Monthly Bull Min Health,1966
3. Preventing pressure sores in hospital: a controlled trial of a large-celled ripple mattress;Bliss;Br Med J,1967
4. Use of ripple beds;Bliss;Age and Ageing,1978
5. Prevention of pressure sores: monitoring mobility and assessment of clinical condition;Exton-Smith,1976