11.   Most of the traditional retailers refuse to disclose their Web site finances, so measuring success is virtually impossible.

12.   Richardson is among those who has believed for many years that measuring brain waves is a far better alternative.

13.   Unfortunately, measuring this directly is notoriously difficult.

14.   What it is to be measured by is not an easy question, but it has something to do with defying destiny, winning against the odds.

15.   That is why it is difficult to measure their satisfaction.

16.   There are no opinion polls in special elections here, so measuring voter intentions is tricky.

17.   There are also measuring posts to check the effect of the explosions underground.