 
                            ...
| [Henricson 1992] | Chapter 10, "Constants" | 
| [Saks 2001a] | |
| [Saks 2001b] | |
| [Saks 2002] | |
| [Summit 2005] | Question 10.5b | 
...
 
                            ...
| [Henricson 1992] | Chapter 10, "Constants" | 
| [Saks 2001a] | |
| [Saks 2001b] | |
| [Saks 2002] | |
| [Summit 2005] | Question 10.5b | 
...