@article{IM2_1999_63_6_a0,
     author = {S. A. Albeverio and J. M. Bayod and C. Perez-Garsia and A. Yu. Khrennikov and R. Cianci},
     title = {Non-Archimedean analogues of orthogonal and symmetric operators},
     journal = {Izvestiya. Mathematics},
     pages = {1063--1087},
     year = {1999},
     volume = {63},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1999_63_6_a0/}
}