American Mathematical Monthly
Volume 90; Issue 104
|
|
5
|
|
10
|
|
11
|
|
14
|
|
18
|
|
23
|
|
25
|
|
27
|
|
29
|
|
30
|
|
31
|
|
33
|
|
34
|
|
42
|
|
50
|
|
56
|
|