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Discrete Mathematics > 2015 > 338 > 11 > 2042-2050
Discrete Mathematics > 2013 > 313 > 19 > 1934-1943
Applied Mathematics-A Journal of Chinese Universities > 2012 > 27 > 2 > 234-242
Discrete Mathematics > 2015 > 338 > 11 > 2042-2050
Discrete Mathematics > 2013 > 313 > 19 > 1934-1943
Applied Mathematics-A Journal of Chinese Universities > 2012 > 27 > 2 > 234-242