Chidchanok Suwannaketchanatit, Pornsuk Chaisuk, Jitraparn Piluek, Surin Peyachoknakul and Pattana Srifah Huehne 2006. Evaluation of Constitutive Promoters for Gene Expression in Dendrobium Protocorms and Flowers. Agriculture and Natural Resources. 40, 4 (Aug. 2006), 934–943.