Yun-Joo's work on auditory P300-based BCI is published in Cogn Neurodyn :)

Design of auditory P300-based brain-computer interfaces with a single auditory channel and no visual support

Y. J. Choi, O.-S. Kwon and S.P. Kim

Cognitive Neurodynamics

https://doi.org/10.1007/s11571-022-09901-3