Matsuo T, Onai K, Okamoto K, Minagawa J, Ishiura M (2006): Real-time monitoring of the circadian gene expression in the chloroplast. Mol. Cell. Biol. 26:863-870.

Okamoto K, Onai K, Furusawa T, Ishiura M (2005): A portable integrated automatic apparatus for the real-time monitoring of bioluminescence in plants. Plant Cell Environ. 28:1305-1315.

Okamoto K, Onai K, Ezaki N, Ofuchi T, Ishiura M (2005): An automated apparatus for the real-time monitoring of bioluminescence in plants. Anal. Biochem. 340:187-192.

Okamoto K, Onai K, Ishiura M (2005): RAP, an integrated program for monitoring bioluminescence and analyzing circadian rhythms in real time. Anal. Biochem. 340:193-200.

Kucho K, Okamoto K, Tabata S., Fukuzawa H, and Ishiura,M (2005): Identification of novel clock-regulated genes by cDNA macroarray analysis in Chlamydomonas reinhardtii. Plant Mol. Biol. 57:889-906.

Kucho K, Okamoto K, Tsuchiya, Y., Nomura S., Nango M., Kanehisa M., and Ishiura, M (2005): Global analysis of circadian expression in the cyanobacterium Synechocystis sp. strain PCC 6803. J. Bacteriol. 187: 2190-2199.

Onai K, Okamoto K, Nishimoto H, Morioka C, Hirano M, Kami-ike N, Ishiura M (2004): Large-scale screening of Arabidopsis circadian clock mutants by a high-throughput real-time bioluminescence monitoring system. Plant J. 40:1-11.

Onai K, Morishita M, Itoh S, Okamoto K, Ishiura M (2004): Circadian rhythms in the thermophilic cyanobacterium Thermosynechococcus elongatus: compensation of period length over a wide temperature range. J. Bacteriol. 186:4972-4977.