31. An ECB working paper evaluated the efficacy of OMT policies. 32. "At some point, the majority of original working papers were destroyed, " the report said. 33. Foreigners without fixed residence and proper working papers are not allowed to be gainfully employed, 34. In the early 1990s she wrote her first working papers with Janis L . Gogan. 35. There are no working papers on any issue, a U . S . official said. 36. One European Union working paper puts the number needed at 75 million immigrants by 2050. 37. His working papers on the teachings of Fox are held at Yorkshire Quaker Heritage Project. 38. Spain insists that immigrants should get their working papers in order before they enter Spain. 39. National Bureau of Economic Research Working Paper 7521 .) 40. Christian Action on AIDS was responsible for the working papers on AIDS for Paul Moore.