In the paper, the model surface method is applied to arbitrary CR-manifolds of finite Bloom–Graham type. A family of basic assertions is proved. It is proved also that, for a model surface, the condition that the Bloom–Graham type is constant is a criterion for holomorphic homogeneity. Distinctions from the case of rigid models treated earlier are clarifies. A series of questions and conjectures is formulated.

中文翻译：

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CR-有限布鲁姆-格雷厄姆类型的流形：模型表面方法

在本文中，模型表面方法适用于有限Bloom-Graham型的任意CR流形。证明了一系列基本断言。还证明，对于模型表面，Bloom–Graham类型恒定的条件是全纯同质性的标准。明确了与之前处理的刚性模型的区别。提出了一系列问题和猜想。