New Development of Space Propulsion Theory-Breakthrough of Conventional Propulsion Technology
https://www.researchgate.net/profile/Yoshinari_Minami/publication/330184698_NEW_DEVELOPMENT_OF_SPACE_PROPULSION_THEORY-BREAKTHROUGH_OF_CONVENTIONAL_PROPULSION_TECHNOLOGY/
Towards Multi-Disciplinary SETI Research
https://www.jacquesvallee.net/wp-content/uploads/2018/11/Towards_Multi-disciplinary_SETI_Research.pdf
Searching for exoplanets with HEPS: I. detection probability of Earth-like planets in multiple systems
http://iopscience.iop.org/article/10.1088/1674-4527/19/1/4