While many firms have been posting strong profit numbers recently, many investors have been worrying about top-line revenue growth. Cost-cutting can only go on so long, the logic goes — if companies can’t generate demand and grow sales, they eventually will run into a profit-growth wall.

But while top-line growth has been a big concern, Validea CEO John Reese says a number of companies are finding ways to post strong growth in revenues, despite the current economic climate. And in his latest Seeking Alpha article, he highlights a handful of firms that are doing just that — and passing one or more of his Guru Strategy computer models, each of which is based on the approach of a different investing great.

“Whether because of conditions within their specific industries, an ability to tap into areas of the world that do have strong demand, or a good ol’ fashioned ability to market and sell their products, a number of firms have been producing very good top-line growth in a challenging climate,” Reese writes. Among them: healthcare company Neogen Corporation, which upped sales by more than 30% in the most recent quarter, and gets approval from Reese’s Martin Zweig-inspired strategy.

To read the full article and see the other four Guru Strategy-approved stocks, click here.