== Abstract ==

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 far as we know, the problem of existence of a maximiser of the welfare function in traffic congestion models a la Mohring and Harwitz has never been posed. In this chapter we present a mathematically rigorous existence result and take the opportunity to provide a similar variant of their self-financing result.

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== Original document ==

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The different versions of the original document can be found in:

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* [http://library.wur.nl/WebQuery/wurpubs/354953 http://library.wur.nl/WebQuery/wurpubs/354953]

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* [http://link.springer.com/content/pdf/10.1007/978-3-540-35484-0_4 http://link.springer.com/content/pdf/10.1007/978-3-540-35484-0_4],

: [http://dx.doi.org/10.1007/978-3-540-35484-0_4 http://dx.doi.org/10.1007/978-3-540-35484-0_4]

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* [https://link.springer.com/chapter/10.1007/978-3-540-35484-0_4 https://link.springer.com/chapter/10.1007/978-3-540-35484-0_4],

: [https://library.wur.nl/WebQuery/wurpubs/354953 https://library.wur.nl/WebQuery/wurpubs/354953],

: [https://www.narcis.nl/publication/RecordID/oai%3Aresearch.vu.nl%3Apublications%2Fd137119c-e117-4156-8c17-ad0b139783e2 https://www.narcis.nl/publication/RecordID/oai%3Aresearch.vu.nl%3Apublications%2Fd137119c-e117-4156-8c17-ad0b139783e2],

: [https://research.vu.nl/en/publications/on-traffic-congestion-models-%C3%A0-la-mohring-and-harwitz https://research.vu.nl/en/publications/on-traffic-congestion-models-%C3%A0-la-mohring-and-harwitz],

: [https://rd.springer.com/chapter/10.1007/978-3-540-35484-0_4 https://rd.springer.com/chapter/10.1007/978-3-540-35484-0_4],

: [https://core.ac.uk/display/91387429 https://core.ac.uk/display/91387429],

: [https://academic.microsoft.com/#/detail/1538289169 https://academic.microsoft.com/#/detail/1538289169]

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