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2Fixed-point theorems for multi-valued functions and their applications to the functional equations /“...Państwowe Wydawn. Nauk.,...”
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16by Bartoszyński, Kazimierz, Bartoszyński, Kazimierz, Bartoszyński, Kazimierz, Bartoszyński, Kazimierz“...Państwowe Wydawn. Nauk.,...”
Published 1985
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19by Grigorʹev, Vladimir I͡Urʹevich, Grigorʹev, Vladimir I͡Urʹevich, Grigorʹev, Vladimir I︠U︡rʹevich“...Państwowe Wydawn. Nauk.,...”
Published 1986
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