@article{INTD_1984_25_a1,
     author = {M. M. Vishik},
     title = {Non-Archimedean spectral theory},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Noveishie Dostizheniya},
     pages = {51--114},
     publisher = {mathdoc},
     volume = {25},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTD_1984_25_a1/}
}