Valerie Johnson

	1997
2		Helen Petrie, Valerie Johnson, Thomas Strothotte, Rainer Michel, Andreas Raab, Lars Reichert: User-centred design in the development of a navigational aid for blind travellers. INTERACT 1997: 220-227
	1996
1		Thomas Strothotte, Steffi Fritz, Rainer Michel, Andreas Raab, Helen Petrie, Valerie Johnson, Lars Reichert, Axel Schalt: Development of Dialogue Systems for a Mobility Aid for Blind People: Initial Design and Usability Testing. International ACM Conference on Assistive Technologies 1996: 139-144

Coauthor Index

1	Steffi Fritz	[1]
2	Rainer Michel	[1] [2]
3	Helen Petrie	[1] [2]
4	Andreas Raab	[1] [2]
5	Lars Reichert	[1] [2]
6	Axel Schalt	[1]
7	Thomas Strothotte	[1] [2]