Analysis of information sources in references of the Wikipedia article "桑兰" in Chinese language version.
This case study demonstrates that placement of the vault board and the resulting destruction of an effective take-off were at the root of the performance problem that led to the tragic injury.（译文：此案例的研究结果表明，起跳板的位置和起跳的失误是导致此次悲剧性事故的根源。）
