He became interested in the puzzle of the persistent high unemployment in LOCATION@1 despite no let-up in inflation and published on this subject with PERSON@1 -LRB- the director of ORGANIZATION@1 -RRB- .

He became interested in the continuing high unemployment in LOCATION@1 and published some work about it with PERSON@1 -LRB- the director of ORGANIZATION@1 -RRB- .
