“Study on Strength and Fracture Toughness of Al–Zn–Mg–Cu–Ti(–Sn) Alloys”. Journal of Mining and Metallurgy, Section B: Metallurgy, vol. 51, no. 1, Jan. 2015, p. 73, https://test.aseestant.ceon.rs/index.php/jmm/article/view/3269.