1. Hedrih (Stevanović), K.R.: Non-linear phenomena in vibro-impact dynamics: Central collision and energy jumps between two rolling bodies, Dedicated to memory of Professor and important scientist Ali Nayfeh (December 21, 1933-March 27, 2017). Nonlinear Dyn. 91(3), 1885–1907 (2018). https://doi.org/10.1007/s11071-017-3988-x
2. Hedrih (Stevanović) KR.: Vibro-impact dynamics in systems with trigger of coupled three singular points: Collision of two rolling bodies, The 24th International Congress of Theoretical and Applied Mechanics (IUTAM ICTAM 2016), Montreal, Canada, 21–26 August, 2016, Book of Papers, pp. 212–213. IUTAM permanent site. (2016). ISBN: NR16-127/2016E-EPUB; Catalogue Number: 978-0-660-05459-9
3. Hedrih (Stevanović) KR: Generalized rolling pendulum along curvilinear trace: Phase portrait, singular points and total mechanical energy surface. In: Prokopenya, A., Gil-Swiderska, A. (eds.) Computer Algebra Systems in Teaching and Research, vol. VI, p. 204216. Publisher Siedlce University of Natural Sciences and Humanities, Siedlce (2017). ISSN 2300-7397. http://www.castr.uph.edu.pl
4. Hedrih (Stevanović) KR: Tangent space extension of the position vectors of a discrete rheonomic mechanical system, Professor N. R. Sen Memorial Lecture. Bull. Calcutta Math. Soc. 104(2), 81–102 (2012)
5. Hedrih (Stevanović) KR: Angular velocityand intensity under change of basic vectors of position vector of tangent space of a meterial system kinetic point –Consideration of the difference betwenn linear and nonlinear transformations, To memory of academician Vladimir Metodievich Matrosov (May 8, 1932-April 17,2011) President of Academy of nonlinear Sciences. Tensor. 75(1), 71–93 (2014). Tensor Society (Tokyo), c/o Kawaguchi Inst. of Math. Soc. Japan