- tr.mgwiki.top wiki/PT-91_TwardyPT-91 Twardy. Polonya Ordusu için üretim varyantı, T-72M1'in kapsamlı bir şekilde modernize edilmiş gelişimi.
- defence24.com polish-pt-91-twardy-tanks-sent-to-…The fact that the Polish PT-91 Twardy MBTs have already arrived in Ukraine, as a part of the military aid package, has been announced by Andriy Yermak...
- en.defence-ua.com industries/what_is_special_…ERAWA is generally believed to increase the survivability of the PT-91 Twardy tank by 30-70%, depending on the type of projectile.
- tr.wiki7.org wiki/PT-91PT-91 Twardy ("Katı"), Sovyet T-72M1'in lisanslı bir versiyonuna dayanan bir Polonya ana muharebe tankıdır . İlk prototipler 1993 yılında yapıldı.
- web.archive.org web/20131107212614/http://www.…These are operated in conjunction with the OBRA laser warning system. The PT-91 Twardy has new gun stabilization system and new fire control system.
- en-academic.com dic.nsf/enwiki/11873795The PT-91 Twardy ("hard","tough" or "resilient") is a Polish main battle tank. It is a development of the T-72M1 and first entered service in 1995.
- commons.wikimedia.org wiki/PT-91_TwardyEnglish: The PT-91 Twardy ("PT-91 Hard") is a Polish main battle tank. It is a very extensive modernization of the T-72M1, which entered service in 1995.
- http://turkcewikipedia.com pt-91-twardyPT-91 Twardy Polonya yapımı ana muharabe tankıdır. T-72M/M1 tankının geliştirilmesiyle ortaya çıkmıştır. T-72'nin geliştirilmiş varyantıdır.
- vistapointe.net pt-91-twardy.htmlIn compilation for wallpaper for PT-91 Twardy, we have 25 images. We determined that these pictures can also depict a Military, PT-91 Twardy, Tank.