Relationship of 1,3-bis(2-chloroethyl)-1-nitrosourea (BCNU) and 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU) pharmacokinetics of uptake, distribution, and tissue/plasma partitioning in rat organs and intracerebral tumors - Levin, V A; Kabra, P A; Freeman-Dove, M A (Cancer Chemother Pharmacol, 1978)