May 10, 2013, 3:26 PM — Here's how you can install LibreOffice 4.03 in Ubuntu 13.04.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
sudo add-apt-repository ppa:libreoffice/libreoffice-4-0
sudo apt-get update && sudo apt-get dist-upgrade
For more, see the original article at the link below.