@incollection{JEDP_1999____A10_0,
     author = {Georgi Popov and Georgi Vodev},
     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},
     doi = {10.5802/jedp.554},
     mrnumber = {2000i:35154},
     zbl = {01810583},
     language = {en},
     url = {https://proceedings.centre-mersenne.org/articles/10.5802/jedp.554/}
}