1
by COOPER
Published 2007
2
by Shneiderman
Published 2005
3
by Vredenburg
Published 2002
4
by Shneiderman
Published 2010
5
by Saffer
Published 2007
6
by MANDEL
Published 1997
7
Published 1981
8
by SMITH
Published 1997
9
by Nielsen
Published 1993
10
11
12
by Hackos
Published 1998
13
by COOPER
Published 2003
14