The freshwater mollusks (Gastropoda, Pulmonata, Lymnaeidae) in the Meotian sediments of the soutern Ukraine von V. A. Kovalenko

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The freshwater mollusks (Gastropoda, Pulmonata, Lymnaeidae) from the Pontian sediments of the Southern Ukraine von V. A. Kovalenko

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The freshwater mollusks (Gastropoda, Pulmonata, Lymnaeidae) from the Lower Sarmatian for Ukraine and Poland von V. A. Kovalenko

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Stratification features of the Meotian sediments of the Southern Ukraine by ostracodas von Ju. V. Vernigorova, V. A. Kovalenko

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Stratification features of the Pontian sediments in the Southern Ukraine by means of ostracods von V. A. Kovalenko, Ju. V. Vernigorova

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Inverse class-f power amplifier using slot resonators as a harmonic filter von Ju. V. Rassokhina, V. G. Kryzhanovskij, V. A. Kovalenko, P. Colantonio, R. Giofre

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