Paper

https://drive.google.com/open?id=0BwgwW3kEfQv7THBreDMyT1c0OG8
https://drive.google.com/open?id=0BwgwW3kEfQv7MDE4MC13eU5KbWM
https://drive.google.com/open?id=0BwgwW3kEfQv7RlVNVGlUUVo4ZWM