Constraint line methods and the applications in ecology
Rui-Fang HAO, De-Yong YU, Jian-Guo WU, Qin-Feng GUO, Yu-Peng LIU
Chin J Plan Ecolo . 2016, (10): 1100 -1109 .  DOI: 10.17521/cjpe.2016.0152