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ACTA MATHEMATICA UNIVERSITATIS COMENIANAE **

pp. 161-167

L. SOLTES

Institute of Applied Mathematics

Faculty of Mathematics, Physics and Informatics

Comenius University

842 48 Bratislava, Slovak Republic

Telephone: + 421-2-60295111 Fax: + 421-2-65425882

e-Mail: amuc@fmph.uniba.sk Internet: www.iam.fmph.uniba.sk/amuc

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