| 2018-10 | General Implicativity in Groupoids | 김희식 |
| 2013-02 | Generalized Fibonacci sequences in groupoids | 김희식 |
| 2019-04 | Graphs based on Hoop algebras | 김희식 |
| 2017-01 | Hesitant fuzzy translations and extensions of subalgebras and ideals in BCK/BCI-algebras | 김희식 |
| 2017-09 | Hyperfuzzy subsets and subgroupoids | 김희식 |
| 2012-08 | The Hypergroupoid Semigroups as Generalizations of the Groupoid Semigroups | 김희식 |
| 2014-06 | Ideal Theory in Semigroups Based on Intersectional Soft Sets | 김희식 |
| 2017-11 | Int-soft ideals of pseudo MV-algebras generated by a soft set | 김희식 |
| 2014-04 | The Interaction between Fuzzy Subsets and Groupoids | 김희식 |
| 2020-09 | Locally finiteness and convolution products in groupoids | 김희식 |
| 2014-04 | (M, N)-Soft Intersection BL-Algebras and Their Congruences | 김희식 |
| 2015-09 | M-fuzzy h-ideals in h-semisimple M-Γ-hemirings | 김희식 |
| 2019-09 | Makgeolli Structures and Its Application in BCK/BCI-Algebras | 김희식 |
| 2018-07 | A Method to Identify Simple Graphs by Special Binary Systems | 김희식 |
| 2020-08 | Multipolar intuitionistic fuzzy hyper BCK-ideals in hyper BCK-algebras | 김희식 |
| 2014-07 | (n-1)-Step Derivations on n-Groupoids: The Case n=3 | 김희식 |
| 2014-07 | A New Extended Soft Intersection Set to (M, N)-SI Implicative Fitters of BL-Algebras | 김희식 |
| 2015-11 | Non-commutative residuated lattices based on soft sets | 김희식 |
| 2016-06 | ON (FUZZY) WEAK-ZERO GROUP OIDS AND (X, N)-ZERO GROUPOIDS | 김희식 |
| 2017-04 | On BI-algebras | 김희식 |
