An article entitled (name of article), written by (name of the author), appeared in your (date) issue of (publication), which we found to be most informative and to have an application to our business.
We kindly request your permission to reproduce an abstract from this article, with the appropriate acknowledgment, to be used in our current (sales brochure/trade journal).
If this meets with your firms approval, at your earliest convenience, please send us a written notice of authorization.