Roman Żuliński and his principles of differential and integral calculus (Devoted memory of Polish mathematicians who gave their lives for the Motherland)
Antiquitates Mathematicae, Tome 4 (2010).
On August 5, 1864 at the Warsaw Citadel gave their lives for their homeland Jan Jeziorański, Rafal Krajewski, Józef Toczyski, Romuald Traugutt and Roman Żuliński. Their blood was not in vain. The next generation of Poles felt obliged to continue their work. Day 11 November 1918 was a natural consequence of the armed Uprising and their traditions.
Source: 
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Antoni Leon Dawidowicz. Roman Żuliński and his principles of differential and integral calculus (Devoted memory of Polish mathematicians who gave their lives for the Motherland). Antiquitates Mathematicae, Tome 4 (2010). https://geodesic-test.mathdoc.fr/item/ANME_2010__4_293294/