An author may self-archive an author-created version of his/her article on his/her own website and/or the repository of Author’s department or faculty. Author may also deposit this version on his/her funder’s or funder’s designated repository at the funder’s request or as a result of a legal oblicgation, provided it is not made pullicly available until 12 months after official publication by Springer. He/she may not use th publisher’s PDF version,which is posted on www.springerlink.com, for the purpose of self-archiving or deposit.