American Mathematical Monthly
Volume 85; Issue 41
|
|
2
|
|
7
|
|
11
|
|
14
|
|
15
|
|
19
|
|
20
|
|
23
|
|
24
|
|
25
|
|
28
|
|
30
|
|
32
|
|
33
|
|
34
|
|
36
|
|
37
|
|
39
|
|
41
|
|
49
|
|