Sevi, A.A.SeviGe, L.L.Ge2019-05-092019-05-092012https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881383049&doi=10.1061%2f%28ASCE%29MT.1943-5533.0000460&partnerID=40&md5=63c6afbc42bec5882065cf2c31725516https://scholars.lib.ntu.edu.tw/handle/123456789/407162Cyclic behaviors of railroad ballast within the parallel gradation scaling frameworkjournal article10.1061/(ASCE)MT.1943-5533.00004602-s2.0-84881383049WOS:000311361900002