- Resonant Phase Escape from the First Resistive State of Bi2Sr2CaCu2Oy Intrinsic Josephson Junctions under Strong Microwave Irradiation, 
  Yusaku Takahashi,  Daiki Kakehi,  Shuho Takekoshi,  Kazuki Ishikawa,  Shin-ya Ayukawa, and  Haruhisa Kitano, J. Phys. Soc. Jpn. 85, 073702-1 - 073702-4 (2016).
  
 
  - Increase of Phase Retrapping Effects in the Switching Rate from the Finite Voltage State of the Underdamped Intrinsic Josephson Junctions, 
  Haruhisa Kitano, Yusaku Takahashi, Daiki Kakehi, Hikaru Yamaguchi, Shin-ichiro Koizumi, and Shin-ya Ayukawa, J. Phys. Soc. Jpn. 85, 054703-1 - 054703-6 (2016).
  
 
  - Dissipation Effects of the Phase in Higher Order Switching Events of Intrinsic Josephson Junctions,   
  Daiki Kakehi, Yusaku Takahashi, Hikaru Yamaguchi, Shin-ichiro Koizumi, Shin-ya Ayukawa and Haruhisa Kitano, IEEE Transactions on Applied Superconductivity, 26, 1800204-1 - 1800204-4 (2016).