This, by Dr. Richard Moore, who at the time was Professor of New Testament at The Baptist Theological College of Western Australia, was really good on the Greek words translated "righteousness" and "justification" and why the translation of those words might be wrong and lead to confusion.
A quote:
"It is clear from such usage that neither the adjective "dikaio"nor the noun "dikaiosunvh" bears a forensic connotation; most frequently they refer to ‘what is right’ or (morally) righteous. …It is fallacious to assume or insist that a particular connotation inheres in a word as a means of proving that connotation for the purposes of theological argument. While this practice is by no means restricted to the dikai- words, that word-family provides a blatant and frequent example of such abuse. Again and again writers who advocate a forensic understanding of the dikai- family do so without considering it necessary to supply any evidence for the position they take. No doubt this is in no small measure due to the fact such a view is so widely espoused. Here it is possible to note only briefly major obstacles the forensic view faces, without spelling out the arguments in detail."
Here's a link to his paper in PDF format. http://colloquiumjournal.org/back-issues/Coll30.1/Moore.pdf