- Author: Parker E.N.
- Language: English
- Year: 1994
- Author: Charles F. Kennel
- Language: English
- Year: 1995
- Author: Eugene N. Parker
- Language: English
- Year: 1994
- Author: Charles F. Kennel
- Language: English
- Year: 1996
- Author: L. F. Burlaga
- Language: English
- Year: 1995