18. Calendar with impossible objects
• Designers in Russian company Gazdevice, which produces gas
equipment, created company’s calendar for the year 2007 with
Oscar Reutersvärd-style impossible figures. The slogan of the
company is "Unreal is real".
• http://nevsedoma.com.ua/index.php?newsid=6700
• http://max.az/post1390-kalendar-2007-goda-s-nevozmozhnimi-obektami
• http://impossible-world.blogspot.gr/2010/08/calendar-2010-of-gazdevice-company.html
• presentation by sotos