American Mathematical Monthly
Volume 71; Issue 52
|
|
5
|
|
7
|
|
12
|
|
16
|
|
20
|
|
22
|
|
23
|
|
24
|
|
26
|
|
27
|
|
28
|
|
30
|
|
32
|
|
35
|
|
36
|
|
41
|
|
53
|
|
62
|
|
64
|
|
66
|
|
67
|
|
70
|
|
71
|
|
72
|
|
81
|
|
85
|
|
88
|
|