http://en.wikipedia.org/wiki/Michael_Balint
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11928655&dopt=Abstract
http://www.ingentaconnect.com/content/klu/tajp/2002/00000062/00000001/00365884