Πηγή:
- https://www.facebook.com/photo.php?fbid=10151051347673598&set=oa.326574544093556&type=3&theater
- http://trenoargolida.blogspot.com/2014/02/73050.html
- http://www.voestalpine.com/railpro/en/products/Permanent-way/Buffer-stops/
- https://www.alamy.com/stock-photo-vintage-buffer-stop-north-thoresbylincs-wolds-railway-easter-gala-55093887.html
- http://www.travelwriticus.com/hamm-rail-buffer-stop/
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