@incollection{JEDP_1999____A5_0,
     author = {Victor Ivrii},
     title = {Accurate {Spectral} {Asymptotics} for periodic operators},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {5},
     pages = {1--11},
     publisher = {Universit\'e de Nantes},
     year = {1999},
     doi = {10.5802/jedp.549},
     mrnumber = {2000h:35125},
     zbl = {01810578},
     language = {en},
     url = {https://proceedings.centre-mersenne.org/articles/10.5802/jedp.549/}
}