References
- FISHE , P. F. 1996 . Extending the applicability of viewsheds in landscape planning . Photogramme trie Engineering & Remote Sensing , 62 : 1297 – 1302 .
- DE FLORIAN , L. , MARZAN , P. and PUPP , E. 1994 . Line-of-sight communication on terrain models . International Journal of Geographic Information Systems , 8 : 329 – 342 .
- JAG , R. , NOVALIN , M. , SUNDARA , A. and NATARAJA , T. 1993 . Wasteland development using geographic information system techniques . International Journal of Remote Sensing , 14 : 3249 – 3257 .
- LE , J. 1991 . Analysis of visibility sites on topographic surfaces . International Journal of Geographical Information Systems , S : 413 – 429 .
- LE , J. 1993 . Digital analyses of viewshed inclusion and topographic characteristics . Photogrammetric Engineering and Remote Sensing , 60 : 451 – 456 .
- NAG , G . 1994 . Terrain visibility . Computers and Graphics , 18 : 763 – 773 .
- SORENSE , P. A. and LANTE , D . 1993 . Two algorithms for determining partial visibility and reducing data structure induced error in viewshed analysis . Photogramme trie Engineering & Remote Sensing , 59 : 1149 – 1160 .
- WAN , J. , ROBINSO , G and WHIT , K. 1996 . A fast solution to local viewshed computation using grid-based digital elevation models . Photogramme trie Engineering and Remote Sensing , 62 : 1157 – 1164 .
- STEFANAKI , E. and KAVOURA , M. On the determination of the optimum path in space . In Spatial information theory: A theoretical basis for GIS. Proceedings of International Conference COSIT '95 . Lecture Notes on Computer Science , pp. 241 – 257 . Berlin : Springer .
- WARNT , W. 1957 . Transportation, social physics, and the Law of Refraction . The Professional Geographer , 9 : 2 – 7 .
- DOUGLA , D. H . 1993 . Least-cost path in geographic information systems, Research Note No. 61 , Ottawa : Department of Geography, University of Ottawa .
- FELDMA , S. C. , PELLETIE , R. E. , WALSE , E. , SMOO , J. C. and AH , D. May 1996 1996 . GIS, remote sensing analysis used to select potential route , May 1996 , 52 – 55 . Pipe Line & Gas Industry .