I always beg for links to abstracts rather than PDFs, but this one doesn't seem to be on the arXiv, so that's not so easy. Here's the one-level-up page: http:

I always beg for links to abstracts rather than PDFs, but this one doesn't seem to be on the arXiv, so that's not so easy. Here's the one-level-up page: http://www.karlin.mff.cuni.cz/~stanovsk/qptp http://www.karlin.mff.cuni.cz/~stanovsk/qptp ; and the article page for the journal in which it appeared (AI Comm. 23 (2010) 2–3): http://content.iospress.com/articles/ai-communications/aic460 http://content.iospress.com/articles/ai-communications/aic46... .