Fractional model for pharmacokinetics of high dose methotrexate in children with acute lymphoblastic leukaemia. - Jovan K. Popovic; Dragan T. Spasic; Jela Tosic; Jovanka L. Kolarovic; Rachid Malti; Igor M. Mitic; Stevan Pilipovic; Teodor M. Atanackovic (Commun. Nonlinear Sci. Numer. Simul., 2015)