1. 1
    Published 1974
    ...HC 60 .V0985...
    Journal
  2. 2
    Published 1985
    ...HC 60 .D4893...
    Journal
  3. 3
    Published 1988
    ...HC 60 .C0993...
    Journal
  4. 4
    Published 1976
    ...HF 51.5 .N532...
    Journal
  5. 5
    ...HC 59.69 .A523...
    Journal