Geodesic
Stochastic method for optimization of non-minimal variational basis
Matematičeskoe modelirovanie, Tome 12 (2000) no. 1, pp. 104-113.

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New type of non-minimal variational basis based on the exponential gaussian polynomials, which are weakly overlapped, is presented. The method employs the combinations of gaussians with near exponents and allows constructing localized basis functions with any power suppression near the origin. Examples are given which show the great advantage of the basis constructed over the traditional one – term gaussian basis. 
@article{MM_2000_12_1_a9,
     author = {A. A. Burilov and D. P. Kostomarov and V. I. Kukulin},
     title = {Stochastic method for optimization of non-minimal variational basis},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {104--113},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_2000_12_1_a9/}
}
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A. A. Burilov; D. P. Kostomarov; V. I. Kukulin. Stochastic method for optimization of non-minimal variational basis. Matematičeskoe modelirovanie, Tome 12 (2000) no. 1, pp. 104-113. http://geodesic.mathdoc.fr/item/MM_2000_12_1_a9/