American Mathematical Monthly
Volume 66; Issue 76
|
|
8
|
|
9
|
|
14
|
|
20
|
|
23
|
|
29
|
|
35
|
|
38
|
|
41
|
|
42
|
|
51
|
|
54
|
|
55
|
|
61
|
|
74
|
|