TY - JOUR A1 - Zheng, Y. A1 - Zhang, L. A1 - Guilbert, E. A1 - Long, Y. T1 - An improved spatial contour tree constructed method JO - Proc. Int. Cartogr. Assoc. J1 - ICA-Proc VL - 1 SP - 128 EP - Y1 - 2018/05/16 PB - Copernicus Publications SN - 2570-2092 UR - https://ica-proc.copernicus.org/articles/1/128/2018/ L1 - https://ica-proc.copernicus.org/articles/1/128/2018/ica-proc-1-128-2018.pdf DO - 10.5194/ica-proc-1-128-2018 ER -