TY - Journal of Geographical Sciences A1 - LU Peng, TIAN Yan, YANG Ruixia T1 - The study of size-grade of prehistoric settlements in the Circum-Songshan area based on SOFM network Y1 - 2013-06-15 00:00:00.0 JF - Journal of Geographical Sciences JO - Journal of Geographical Sciences SP - 538 EP - 548 VL - 23 IS - 3 UR - {https://www.geogsci.com/EN/10.1007/s11442-013-1027-5} N1 - 10.1007/s11442-013-1027-5 ER -