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  _  __     ___     ______     _____     ______  
 | |/ //   / _ \\  |      \\  |  ___||  /_   _// 
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 |_|\_\\   \___//  |______//  |_____||  /__//    
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Text this: Methods of spectral analysis in mathematical physics : conference on Operator Theory, Analysis and Mathematical Physics (OTAMP) 2006, Lund, Sweden