- Author: Mary C Salibsury
- Language: English
- Year: 2002
- Author: Judith Binney
- Language: English
- Year: 1968
- Author: Cynthia Margaret Parker
- Language: English
- Year: 2002
- Author: Diggelmann Lindsay Mark
- Language: English
- Year: 2004
QED
pdf
- Author: Richard Feynman
- Language: English