References 
[Ahlers et al., 1995] Ahlers, K. H., Kramer, A., Breen, 
D. E., Chevalier, P.-Y., Crampton, C., Rose, E., Tuceryan, 
M., Whitaker, R. T., and Greer, D. (1995). Distributed 
augmented reality for collaborative design applications. 
In Proceedings, Eurographics ’95, pages 3-14, Maastricht, 
NL. Elsevier Science Publishers B.V. 
[Bormann, 1998a] Bormann, C. (1998a). The multi-class 
extension to multi-link ppp. Internet Draft (draft-ietf- 
issll-isslow-mcml-03.txt). 
[Bormann, 1998b] Bormann, C. (1998b). PPP in a real 
time oriented hdlc-like framing. Internet Draft (draft-ietf- 
issll-isslow-rtf-02.txt). 
[Bormann, 1998c] Bormann, C. (1998c). Providing inte 
grated services over low-bitrate links. Internet Draft 
(draft-ietf-issll-isslow-03.txt). 
[Bormann et al., 1998] Bormann, C., Cline, L., Deisher, G., 
Gardos, T., Maciocco, C., Newell, D., Ott, J., Sullivan, 
G. , Wenger, S., and Zhu, C. (1998). Rtp payload format 
for the 1998 version of itu-t rec. h.263 video (h.263+). 
Internet Draft (draft-ietf-avt-rtp-h263-video-02.txt). 
[Boronowsky, 1998] Boronowsky, M. (1998). Automatic 
Measurement Interpretation of a Physical System with 
Decision Tree Induction. In Proceedings of the Interna 
tional Symposium on Intelligent Data Engineering and 
Learning in Hong Kong, China. Springer-Verlag. 
[DIN31051, 1985] DIN31051 (1985). Instandhalten: Begriffe 
und Maßnahmen. 
[Egenhofer and Kuhn, 1998] Egenhofer, M. and Kuhn, W. 
(1998). Beyond desktop gis. In Proceedings, pages 281- 
290, Lisbon. 
[Fayyad et al., 1996] Fayyad, U., Piatetsky-Shapiro, G., 
and Smyth, G. (1996). From Data Mining to Knowledge 
Discovery: An Overview, chapter 1. Advances in Knowl 
edge Discovery and Data Mining. 
[Gage, 1997] Gage, D., editor (1997). Network Protocols for 
Mobile Robot Systems, number 3210 in SPIE Proceedings 
on Mobile Robots XII, Pittsburgh, PA. 
[Gage et al., 1998] Gage, D., Bryan, W. D., and Nguyen, 
H. , editors (1998). Internetting Tactical Security Sensor 
Systems, number 3393 in SPIE Proceedings: Digitization 
of the Battlespace, Orlando, FL. 
[Gates, 1996] Gates, B. (1996). Wired wonderland of 
Comdex full of technical sugarplums. New York Times, 
(I)- 
[MacEachren, 1994] MacEachren, A. (1994). Some truth 
with maps. Publication Supported by the Association of 
American Geographers, Washington. 
[Meyer, 1992] Meyer, F. W. (1992). Tätigkeitsarten und 
-Strukturen in der Instandhaltung. In Warnecke, H. J., 
editor, Handbuch Instandsetzung. Tüv Rheinland. 
[Mueller et al., 1998] Mueller, W., Bockholt, U., and Voss, 
G. (1998). Virtual reality in surgical training. In Proceed 
ings, Third Korea-Germany Joint Workshop on Medical 
Image Processing, Seoul, South Korea. 
[Murphy et al., 1997] Murphy, D., Bott, J., Bryan, W., 
Coleman, J., Gage, D., Nguyen, H., and Cheatham, M. 
(1997). Mssmp: No place to hide. In AUVSI ’97 Proceed 
ings, pages 281-290, Baltimore. 
[Pundt and Brinkkoetter-Runde, 1999] Pundt, H. and 
Brinkkoetter-Runde, K. (1999). Visualisation of spatial 
data for field based gis. Computer & Geosciences, Else 
vier Science, special issue ’Geoscientific Visualization’, to 
appear in 1999. 
[Quinlan, 1993] Quinlan, J. (1993). C4-5 Programs for Ma 
chine Learning. Morgan Kaufmann. 
[Rose et al., 1995] Rose, E., Breen, D., Ahlers, K., Cramp- 
ton, C., Tuceryan, M., Whitaker, R., and Greer, D. (1995). 
Annotating real-world objects using augmented reality. In 
Earnshaw, R. and Vince, J., editors, Computer Graphics: 
Developments in Virtual Environments, CG International 
’95 Conference, pages 357-370. Academic Press, London. 
[Rosen and Laub, 1996] Rosen, J. M. and Laub, D. R. 
(1996). Virtual reality and medicine: From training sys 
tems to performing machines. In Proceedings, IEEE 1996 
Virtual Reality Annual International Symposium, pages 
5-13. 
[Sutherland, 1968] Sutherland, I. (1968). A head-mounted 
three dimensional display. In Proceedings, Fall Joint Com 
puter Conference, pages 757-764, Washington, DC. 
[Urban, 1995] Urban, E. C. (1995). The information war 
rior. IEEE Spectrum, 32(ll):66-70. 
[Vallino, 1998] Vallino, J. (1998). Augmented Reality with 
minimal Calibration. PhD thesis, Department of Com 
puter Sciene, University of Rochester, Rochester, NY. 
[Visser, 1998] Visser, U. (1998). Information warehousing 
& mining. Handout & Talk at the Second International 
Conference on Wearable Computing, ICWC-98, Fairfax 
VA. 
[Xybernaut, 1997] Xybernaut (1997). Hands-free wearable 
computing. White paper, Xybernaut Corporation, 12701 
Fair Lakes Circle, Fairfax, VA 22033. 
[Xybernaut, 1998] Xybernaut (1998). Mobile as 
sistant IV. Xybernaut’s MA IV homepage: 
http://www.kanakaris.com/xybernaut/products.html. 
[Zutt and Hubich, 1988] Zutt, F. and Hubich, H. P. (1988). 
Sinnvolles Agieren war früher kaum möglich; Praxis 
beispiel. Instandhaltung aus Sicht der chemischen Indus 
trie. In Schulte, W. and Küffner, G., editors, Instandhal 
tungsmanagement der 90er Jahre. Frankfurter Allgemeine 
Zeitung GmbH. 
Address of the authors: 
Klaus Brinkkötter-Runde, Institute for Geoinformatics, 
University of Münster, Robert-Koch-Str. 26-28, D-48149 Mün 
ster, Germany Tel.: +49 251 83 33728, Fax: +49 251 83 9763, 
Email: runde@ifgi.uni-muenster.de; 
Dr. Ubbo Visser, TZI - Centre for Computing Technolo 
gies, Department of Mathematics and Computer Science, 
University of Bremen, Universitätsallee 21-23, D-28359 Bre 
men, Germany, Tel.: +49 421 218 7840, Fax:. +49 421 218 
7196, Email: visser@tzi.de 
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