Jeya Bharathi, S, K Thiagarajan, and K Navaneetham. “Parikh Factor Matrices for Finite Words of Rectangular Hilbert Space Filling Curve”. International Journal of Engineering & Technology 7, no. 2.31 (May 29, 2018): 50–55. Accessed April 28, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/13396.