ConnectionChain: the Secure Interworking of Blockchains. - Shingo Fujimoto; Yoshiki Higashikado; Takuma Takeuchi (IoTSMS, 2019)

Secure Blockchain Interworking Using Extended Smart Contract. - Shingo Fujimoto; Takuma Takeuchi; Yoshiki Higashikado (IEICE Trans. Inf. Syst., 2022)