The Blockchain for Domain Based Static Sharding. - HyunKyung Yoo; Jongchoul Yim; Sunme Kim (TrustCom/BigDataSE, 2018)

Hierarchical Byzantine fault-tolerance protocol for permissioned blockchain systems. - Quang Tung Thai; Jongchoul Yim; Tae-Whan Yoo; HyunKyung Yoo; Ji-Young Kwak; Sunme Kim (J. Supercomput., 2019)

The Design of Hierarchical Consensus Mechanism Based on Service-Zone Sharding. - Ji-Young Kwak; Jongchoul Yim; Nam-Seok Ko; Sunme Kim (IEEE Trans. Engineering Management, 2020)