books related to designing a good iphone application architecture

I am few months old to iphone / ipad development. I know few coding standards, few coding practices. I am not开发者_开发技巧 aware of design principles and stuff for building a good iphone application architecture. Guide me with link / books which can help me to do this.

I thought 'Cocoa Design Patterns' by Erik M. Buck was really great.

http://www.amazon.com/Cocoa-Design-Patterns-Erik-Buck/dp/0321535022

You may also want to give a look at this two web-resources:

Core Application Architecture for iPhone (describe life cycle and event cycles of an iPhone application and also provide a summary of some of the key design patterns used throughout the development of iPhone applications.)

An Overview of the iPhone Architecture (A detailed overview of the iPhone’s functionality)