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https://scholar.google.com/citations?user=FH3ExXUAAAAJ&hl=en https://www.patent.pl/index.php?tm=0&srvid=0&attid=0&lg=en https://www.researchgate.net/profile/Szymon_Lukaszyk2 https://arxiv.org/search/math?searchtype=author&query=%C5%81ukaszyk%2C+S