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      <marc:subfield code="a">Bochmann, Gregor V., </marc:subfield>
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      <marc:subfield code="a">Study on data network protocols : </marc:subfield>
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      <marc:subfield code="a">"The objective of this study, is to advance the application of formal description methods for obtaining precise specification of protocol standards, and in particular, to determine a formal description method based on state diagrams suitable for use in ISO and CCITT, taking into account existing description methods"--Introduction, page 2.</marc:subfield>
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