Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KOKKINAKIS DM,"Thresholds of O^6-alkylguanine-DNA alkyltransferase which confer significant resistance of human glial tumor xenografts to treatment with 1,3-bis(2-chloroethyl)-1-nitrosourea or temozolomide",Clin Cancer Res,,,2001,7,,421-428,https://cir.nii.ac.jp/crid/1572824501105233792,