Budiono, H. D. S., and F. A. Hadiwardoyo. “Development of Product Complexity Index in 3D Models Using a Hybrid Feature Recognition Method With Rule-Based and Graph-Based Methods”. Eastern-European Journal of Enterprise Technologies, vol. 3, no. 1 (111), June 2021, pp. 47-61, doi:10.15587/1729-4061.2021.227848.