If the third party performs in the obligor's name, it shall be defined as unauthorizedagency.
若第三人是以债务人的名义履行，应属无权代理。
2
There exist similarities and differences between unauthorizedagency in a narrow sense and agency by estoppels.
狭义无权代理与表见代理两者之间，既有联系也有区别。
3
Regarding prima facie agency as authorized agency has some drawbacks, although it has the same results as authorized agency. It is more rational to regard prima facie agency as unauthorizedagency.