- novayagazeta.eu articles/2023/01/27/polsha-…
- vikna.tv ru/video/polsha-peredala-ukraine-tanki-…
- uz.wikidea.ru wiki/PT-91_TwardyPT-91 Twardy - PT-91 Twardy - Wikipedia. "Twardy" qayta yo'naltirishlar. Dirijyor uchun qarang Rim Tvardi. Asosiy jangovar tankning turi. PT-91 "Twardy".
- worldoftanks.eu en/community/accounts/500993263-…Detailed statistics of player pt91twardy in World of Tanks: battles fought, victory rate, player achievements.
- rbc.ua ukr/news/tverdiy-ta-nadiyniy-shcho-vidomo-…
- engineers-channel.blogspot.com p/pt-91-twardy-…The PT-91 Twardy is a Polish main battle tank. A development of the T-72M1, it first entered service in 1995.
- kyivindependent.com presidents-office-poland-to-…The PT-91 Twardy is a main battle tank based on the design of the T-72, the primary tank model operated by both sides in Russia's war against Ukraine.
- defencesecurityasia.com en/pt91-tanks-ukraine-…However, the video did not disclose the specific location in Ukraine where the PT-91 “Twardy” tank, provided by Poland, is in operation.
- defenceturk.net polonyadan-ukraynaya-pt-91-twardy…Polonya, 30 adet PT-91 Twardy ana muharebe tankı da dahil olmak üzere 60 adet ana muharebe tankının Ukrayna'ya teslim edileceğini onayladı.