by Choi, Sung Kyu, Koo, Namjip, Kang, Bowon
Published in Abstract and Applied Analysis (01.01.2014)

by Koo, Namjip, Lee, Hyunhee
Published in Journal of the Korean Mathematical Society (2021)

by Kang, Bowon, Koo, Namjip
Published in Journal of the Korean Mathematical Society (2019)

by Choi, Sung Kyu, Koo, Namjip
Published in Journal of the Korean Mathematical Society (01.09.2016)

by Choi, Sung Kyu, Koo, Namjip
Published in Journal of the Korean Mathematical Society (2016)

by Cui, Yinhua, Koo, Namjip, Choi, Sung Kyu
Published in Abstract and Applied Analysis (2014)

by Choi, Sung Kyu, Koo, Namjip, Goo, Yoon Hoe
Published in Abstract and Applied Analysis (01.01.2008)

by Choi, Sung Kyu, Im, Dong Man, Koo, Namjip
Published in Advances in difference equations (01.01.2008)

by Choi, SungKyu, Koo, Namjip
Published in Journal of inequalities and applications (01.01.2010)

by Choi, Sung Kyu, Koo, Namjip
Published in Advances in difference equations (01.01.2008)

by 구남집, 이현희
Published in Journal of the Korean Mathematical Society (01.09.2023)

by Choi, SungKyu, Im, DongMan, Koo, Namjip
Published in Advances in difference equations (19.03.2008)

by Choi, Sung Kyu, Goo, Yoon Hoe, Koo, Namjip
Published in Advances in difference equations (01.01.2007)

by Choi, Sung Kyu, Koo, Namjip
Published in Advances in difference equations (01.01.2008)

by Choi, Sung Kyu, Goo, Yoon Hoe, Im, Dong Man, Koo, Namjip
Published in Abstract and Applied Analysis (01.01.2009)

by Choi, SungKyu, Goo, YoonHoe, Koo, Namjip
Published in Advances in difference equations (25.10.2007)

by Koo, Namjip
Published in 충청수학회지 (28.02.2017)

by 구남집, 이현희
Published in Journal of the Korean Mathematical Society (01.11.2021)

by Koo, Namjip, Lee, Keonhee, Morales, C. A.
Published in Proceedings of the Edinburgh Mathematical Society (01.11.2018)

by 강보원, 구남집
Published in Journal of the Korean Mathematical Society (01.01.2019)