[1] HAROUN, A. E. and S. O. DUFFUAA. Maintenance Organization (Handbook of Maintenance Management and Engineering). London: Springer-Verlag London Limited, 2009, ISBN 978-1-84882-471-3 .
[2] Dinwiddie, K. Basic Robotics, Cengage Learning; 1 edition, 2015, 352p., ISBN 978-1133950196 .