中国科学院数学与系统科学研究院期刊网
AMS
Analytic Solutions of an Iterative Differential Equation under Brjuno Condition
Jian LIU, Jian Guo SI
Acta Mathematica Sinica . 2009, (9): 1469 -1482 .  DOI: 10.1007/s10114-009-8489-5