Akira Sugimoto, Takumi Nishi, Toshikazu Ekino, Masashi Tanaka, and Alexander M. Gabovich, Dependence on the interlayer spacing of nanoscale electronic states in layered nitride chloride superconductors α-M_x TiNCl investigated by scanning tunneling microscopy/spectroscopy, Low Temp. Phys. 52, (2026) (in press) [Fiz. Nyzk. Temp. 52, 1535–1540, (2026)].