You may also wish to search for items by Nishikawa.
Only one matching reference was found.
Nishikawa, Y.; Miyoshi, S.; Shyoji, M.; Braun, G., Automated optimization of split ratio in capillary gas chromatography, J. Hi. Res. Chromatogr., 1995, 18, 12, 753-756, https://doi.org/10.1002/jhrc.1240181205 . [all data]