@incollection{JEDP_1999____A10_0,
     author = {Popov, Georgi and Vodev, Georgi},
     title = {Resonances for transparent obstacles},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {10},
     pages = {1--13},
     publisher = {Universit\'e de Nantes},
     year = {1999},
     mrnumber = {2000i:35154},
     zbl = {01810583},
     language = {en},
     url = {http://www.numdam.org/item/JEDP_1999____A10_0/}
}