CFO.com has returned to Abrams method of calculating NPV in this article:

" ... using the tool can force managers to think differently about value creation. Indeed, the equation comprises all the key elements of a company's financial statements and mathematically relates them to one another. That interplay means managers can set future growth targets and then measure the progress of meeting or missing those marks."

To read the full article see: http://www.cfo.com/article.cfm/3840159.