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Inverse spectral problem for the differential equation of the second order with singularity
(VSP BV-C/O BRILL ACAD PUBL, 1998)
In this article, for given values of {lambda(n)} and {mu(n)} constructing a differential operator, which has a singularity, has exploined. In order to acomplish this, lambda(n) and mu(n) have to have some certain asymptotic. ...
Trace formula for the Sturm-Liouville operator with singularity
(VSP BV-C/O BRILL ACAD PUBL, 1998)
Let mu(1), mu(2),..., mu(n),... be the Dirichlet spectrum of the operator -d(2)/dx(2) + q(x) acting on L-2(0,pi). In the special case where q(x) = 0, mu(n) = n(2). In the [1] and others discovered the asymptotic formula ...
Foreign body aspiration during childhood and adolescence (review of 215 cases)
(EDITRICE COMPOSITORI, 1998)
The aim of the study is to determine the age and sex distribution and the sort of foreign bodies aspirated during childhood and adolescence. Between April 1987 and March 1998 bronchoscopy was performed for 215 cases. The ...