@book{N_Behr_2012,
 author = {Behr, N. and Fredenhagen, S.},
 doi = {10.1090/pspum/085/1386},
 editor = {Block, Jonathan and Distler, Jacques and Donagi, Ron and Sharpe, Eric},
 publisher = {American Mathematical Society},
 title = {Variable Transformation Defects (Presented at {{String-Math}} 2011)},
 year = {2012}
}