7. References

[1] Now A Robot Will Fill Your Car At The Gas Station, Here’s How It Works. Dec.13 2016. http://wonderfulengineering.com/now-a-robot-will-fill-your-car-at-the-gas-station-heres-how-it-works/

[2] Level luffing crane. Dec.13 2016. https://en.wikipedia.org/wiki/Level_luffing_crane

[3] Elevator mechanism - mehanizam dizala. Dec.13 2016. https://grabcad.com/library/elevator-mechanism-mehanizam-dizala-1