Okada, Hiroshi, Botanical Gardens, Graduate School of Science, Osaka City University, 2000 Kisaichi, Katano, Osaka
Oktaviani, Eka, Department of Agrotechnology, Faculty of Agriculture, Universitas Jenderal Soedirman
Oktaviani Azra, Dina , Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Tanjungpura