@article{article, title  = {{3-D for free: toolkit expands visual dimensions in GIS}},

 year = {{1995}},

 month = {{1}},

 author = {{Hoinkes R and Lange E}},

 volume = {{8}},

 journal = {{GIS World}},

 issue = {{7}},

 pages = {{54-56}},

 note = {{Accessed on 2026/08/24}}}