1. Mathematical formulation of the purchase funnel by using knowledge space theory. Issue 1 (2023) Authors: Lin, Yung-Tzu; Chang, Chuan-Yi; Cheng, Shein-Yung; Lin, Meng-Yun Journal: Journal of pure and applied mathematics Issue: Volume 7:Issue 1(2023) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗