@incollection{JEDP_1990____A15_0,
     author = {M\"arz, Christoph},
     title = {Spectral asymptotics for {Hill's} equation near the potential maximum},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {15},
     pages = {1--10},
     publisher = {Ecole polytechnique},
     year = {1990},
     zbl = {0707.34049},
     language = {en},
     url = {http://www.numdam.org/item/JEDP_1990____A15_0/}
}