Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Nonlinearity_(journal)
Wikipedia: nl.wikipedia.or ... https://nl.wikipedia.org/wiki/Nonlinearity
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Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Nonlinearity_(journal)
Wikipedia: nl.wikipedia.or ... https://nl.wikipedia.org/wiki/Nonlinearity
SUDOC: www.sudoc.fr/04 ... http://www.sudoc.fr/040080536
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Google: www.google.com/ ... https://www.google.com/search?q=ISSN+%220951-7715%22
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