2Goldstein MF,Chervinsky P. Efficacy and safety of doxofyllineconpared to theophylline in chronic reversible asthma doubleb- lined,reandomized placebo-controlled multicentre clinical trail. Med Sci Monit, 2002,8(4) ..CR297-304.
4Franzone JS, Crillo R, Barone D,et al. Doxofylline and theo- phylline are xanthines with partyly different mechanisms of ac- tion in animals. Drugs Bxp Clin Res,1998, 14:479-483.