By Wittwer E.   Bittner J.   Switzer A.   in International Journal of Transport Management

ISSN:1471-4051|1|2|87-99

Elsevier‎(2002)‎

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By Bittner J.   Prikryl J.   Slavik P.   in Computers and Graphics

ISSN:0097-8493|27|4|569-580

Elsevier‎(2003)‎

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By Kurze U. J.   Bittner J.   Kohn S.   in Acta Acustica united with Acustica

ISSN:1610-1928|89|5|818-821

S. Hirzel Verlag‎(2003)‎

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