Subhuti Dharmananda. “Endangered species issues affecting turtles and tortoises used in Chinese medicine”. See in particular APPENDIX 1: "Golden Coin Turtle" (A report dated ngày 27 tháng 4 năm 2002 by ECES News (Earth Crash Earth Spirit)), and APPENDIX 3: "Tortoise Jelly (Turtle Jelly)". Quote: "The popularity of turtle jelly can be seen in the success of Ng Yiu-ming. His chain of specialty stores has grown from one shop in 1991 to 68 today, in Hong Kong, Macau, and mainland China. Ng also packs turtle jelly into portable containers sold at convenience stores. He insists no golden coin turtles are used. 'They're too expensive' he said. '… [I]f you know how to choose the herbal ingredients, jelly made from other kinds of turtles will be just as good.'"
