sources.list
deb http://mirrordirector.raspbian.org/raspbian/ wheezy main contrib non-free rpi

sources.list.d/raspi.list
deb http://archive.raspberrypi.org/debian/ wheezy main

sources.list.d/collabora.list
deb http://raspberrypi.collabora.com wheezy rpi

sources.list.d/wolfram.list
# Wolfram Research, Inc. APT Repository (for WolframEngine)