Herijanto, W, I B Mochtar, and A Wicaksono. “Improvement of Trip Attraction Model in Surabaya by Considering Geographical Weighting of City Centre Activity Function”. International Journal on Advanced Science, Engineering and Information Technology 10, no. 4 (August 25, 2020): 1591–1596. Accessed July 3, 2024. https://ijaseit.insightsociety.org/index.php/ijaseit/article/view/12820.