Optimal design of system of cross-beamsArjassov, Gennadi; Žigailov, SergeiThe 8th International Conference Mechatronics Systems and Materials : 8th Conference Mechatronics Systems and Materials 2012, MSM'2012 : Bialystok, Poland, July 8-13, 20122012 / p. 120-121 https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=7668d28ae9556d62f17c50d233059caeeb3f2508 Study of free vibrations of ladder reiforced with platesArjassov, Gennadi; Petritšenko, AndresThe 4th International Conference Mechatronics Systems and Materials : MSM 2008 : Bialystok, Poland, 14-17 July, 20082008 / p. 116-117