共 50 条
- [43] AN ELEMENTARY PROOF OF A THEOREM OF MACLANE MONATSHEFTE FUR MATHEMATIK, 1968, 72 (02): : 144 - +
- [48] AN ELEMENTARY PROOF OF A THEOREM IN CALCULUS AMERICAN MATHEMATICAL MONTHLY, 1985, 92 (08): : 589 - 590
- [49] AN ELEMENTARY PROOF OF A THEOREM OF ERDOS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1970, 17 (07): : 1068 - &
- [50] ELEMENTARY PROOF OF FRIENDSHIP THEOREM NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1973, 20 (04): : A421 - A421