Automation: Windows phone Applications

I am working on a project, where I am creating automation test cases for the Web, android, iOS and windows applications. I have successfully created web, and android (appium) automation. However, i am completely blocked how and where to start the window phone/tablet application automation from. Any help, ideas and suggestions are welcome.

2nd - For android automation I was able to use Appium and UIautomatorViewer, any tools I can use to dissect the application?

I have installed Visual Studio 2013 premium and I have Windows 7 on my system.

Any suggestiond ideas, or read up link or demo videos will be really helpful.

Thank you