Magazines:

- Photovoltaik 

- Top Agrar


Internet:

http://www.wienerzeitung.at
http://www.oekonews.at 
http://www.bauernzeitung.at 
http://www.agrarheute.com
http://www.farmersweekly.co.uk
http://www.vogliaditerra.com
http://bx.businessweek.com 
http://www.sonnenseite.com
http://www.solaranlagen-portal.de
http://www.topagrar.com 
http://www.ernaehrungsdienst.de
http://www.blick.ch
http://www.greenlaunches.com
http://www.ubergizmo.com
http://www.farmblogger.de
http://facts.ch
http://www.sonnenkonto24.de
http://www.windjournal.de
http://www.electronicsinfoline.com
http://www.eco-trees.org 
http://www.ecofriend.org
http://www.solarfeeds.com
http://www.blick.ch
http://www.wattgehtab.com
http://healthyplanet.glam.com
http://www.techgear.com

Information: heliotrac is the follower of the former project 'solar-tractor' by Open Energy