Analysis of torque distribution in ball-screw mechanisms under extreme temperature conditionsPenkov, IgorTransport means 2018 : proceedings of the international scientific conference : part I2018 / p. 33-36 : ill https://transportmeans.ktu.edu/wp-content/uploads/sites/307/2018/02/Transport-means-I-dalis-2018-09-25.pdf

Axial displacements in ball screw mechanisms with two and four contact-pointPenkov, Igor; Aleksandrov, DmitriInternational review of mechanical engineering2011 / p. 1213-1218 https://www.researchgate.net/publication/289762576_Axial_displacements_in_ball_screw_mechanisms_with_two_and_four_contact-point

Deformations in round-profiled threads and their influence on the screw durabilityPenkov, Igor; Strižak, Viktor; Sivitski, AlinaInternational Review of Civil Engineering2014 / p. 61-67

Design of stud ends and their influence on load of machine housingsPenkov, IgorTrans & motauto world2017 / p. 98-101 : ill https://stumejournals.com/journals/tm/2017/3/98

Precision of thread manufacturing and its influence on durability of screws with different thread profilesStrižak, Viktor; Penkov, IgorMachines, technologies, materials2015 / p. 47-51 : ill http://stumejournals.com/mtm/Archive/2015/7-2015.pdf