This is not a complete list since many of the possible processes need further confirmation.

And, indeed, if any further confirmation was required, we had but to look at the wall of the cave above to find it.

If there is no residue, or for further confirmation, try one more test.

Even for breast and colon cancer, further confirmation is needed.

But I read this as further confirmation of my fears and flipped.

The bureau chief decided against running the story until more details and further confirmation had been obtained.

That concession was further confirmation of what he already suspected.

Is there any further confirmation of these two stories?

It wasn't too powerful- further confirmation that this was indeed a suitable place to hide the money.

We're going to push an inquiry back through our Czech network to get further confirmation.