Petruševski, V. M., & Kalajdžievski, S. (2023). Heptagonal quasicrystals: Construction of 2D lattices and demonstrations using laser pointers – Concluding part. Macedonian Journal of Chemistry and Chemical Engineering, 42(1), 127–131. https://doi.org/10.20450/mjcce.2023.2675 (Original work published April 28, 2023)