1.   Archeologists found convincing proof that the Vikings had landed in North America.

2.   The euro has provided the most convincing proof so far that political will can impose itself on Market forces.

3.   But convincing proof was lacking.

4.   Here is a medium of instant international and, with very little work, very convincing proof of just about anything that anyone wants to believe.

5.   Looking only at wages rather than total labor costs, he says, there is no convincing proof that workers have been frightened into docility.

6.   Murray and Edelstein said there was no convincing proof that the project would protect the mainland.

7.   Once the father is dead, is there a convincing proof of authorship?

8.   The final weekend offered convincing proof.

9.   There is convincing proof that the uranium metal in unexploded weapons presents no danger, the radiation level is low and the rays do not penetrate skin.

10.   There is no convincing proof that an American acquisition of TWA would create an untoward consumer burden.