On exponential decay of solutions of Schrödinger and Dirac equations : bounds of eigenfunctions corresponding to energies in the gaps of essential spectrum
Journées équations aux dérivées partielles (1994), article no. 7, 10 p. 
@article{JEDP_1994____A7_0,
     author = {Nenciu, Gheorghe},
     title = {On exponential decay of solutions of {Schr\"odinger} and {Dirac} equations : bounds of eigenfunctions corresponding to energies in the gaps of essential spectrum},
     journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {7},
     pages = {1--10},
     publisher = {Ecole polytechnique},
     year = {1994},
     zbl = {0948.35506},
     language = {en},
     url = {http://archive.numdam.org/item/JEDP_1994____A7_0/}
}
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Nenciu, Gheorghe. On exponential decay of solutions of Schrödinger and Dirac equations : bounds of eigenfunctions corresponding to energies in the gaps of essential spectrum. Journées équations aux dérivées partielles (1994), article  no. 7, 10 p. http://archive.numdam.org/item/JEDP_1994____A7_0/

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