various additions to MLOSS paper

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@547 255f4249-2263-4417-b1ea-8498779e27a7
additional references



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@548 255f4249-2263-4417-b1ea-8498779e27a7