Wiechmann D . A new bracket system for lingual orthodontic treatment , Part 1 : Theoretical background and development .7 .丁云,徐宝华, Dirk Wiechmann .个性化舌侧矫治技术的特点及其临床应用.口腔正畸学. 2007 , 138-139.9 .林久祥,许天民.现代口腔正畸学.第四版.北京大学医学出版社. 2011. ......