There is also very rarely any useful reference to real-world devices.

In every article I find tips, things to consider, and useful references.

The book is a useful reference for those seeking more serious acquaintance with the region.

This is good reading, and a useful reference for anyone studying the succession drama play out at technology companies.

"The only files which might contain useful references are all well out of my clearance."

Officials also said even useful references could be problematic.

The staff on the surgical ward may suggest useful references.

However, the reader who has to look herself for these useful references will find much else to inform and entertain.

This might even prove to be a useful reference for the Commission in the future.

They are in English only but I hope colleagues will find them a useful reference.