@article{article, title = {{3-D for free: toolkit expands visual dimensions in GIS}}, url = {{}}, year = {{1995}}, month = {{1}}, author = {{Hoinkes R and Lange E}}, volume = {{8}}, journal = {{GIS World}}, issue = {{7}}, pages = {{54-56}}, note = {{Accessed on 2025/06/20}}}