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Retno Widowati, NIDN. 0005017701 and Sachiko Sugimoto and Yoshi Yamano and Sukardiman, NIDN. 0001096305 and Hideaki Otsuka and Katsuyoshi Matsunami (2015) New cis-ent-clerodanes from Linaria Japonica. Phytochemistry Letters, 14. pp. 56-62. ISSN 1874-3900

Rr. Retno Widyowati, NIDN. 0005017701 and Sachiko Sugimoto and Yoshi Yamano and Hideaki Otsuka and Katsuyoshi Matsunami (2015) New methyl threonolactones and pyroglutamates of Spilanthes acmella. In: The Inaugural Symposiumof the Phytochemical Society of Asia, 30 Agustus - 2 September 2015, Tokushima Bunri University. (Unpublished)

Rr. Retno Widyowati, NIDN. 0005017701 and Sachiko Sugimoto and Yoshi Yamano and Hideaki Otsuka and Katsuyoshi Matsunami (2014) New flavonoid glycosides from Linaria Japonica. In: The 8th JSP-CCTCNM-KSP Joint Symposium on Pharmacognosy, 13 September 2014, Fukuoka, Japan. (Unpublished)