by IM, YOUNG HO, LEE, KYEONGHUI, SHIN, MI HWA
Published in Journal of the Korean Mathematical Society (2015)

by Lee, Kyeonghui, Im, Young Ho, Kim, Sera
Published in Topology and its applications (01.09.2019)

by Im, Young Ho, Lee, Kyeonghui, Son, Heeok
Published in European journal of combinatorics (01.12.2010)

by Im, Young Ho, Lee, Kyeonghui
Published in European journal of combinatorics (01.07.2009)

by IM, YOUNG HO, LEE, KYEONGHUI, SHIN, MI HWA
Published in Journal of the Korean Mathematical Society (01.09.2015)