W. Friedrich, D. Jahn, and L. Schmidt. International Status Conference - Lead Projects \"Human-Computer Interaction\" Saarbrücken 2001, page 79–89. Berlin, DLR, (2001)
W. Friedrich, D. Jahn, and L. Schmidt. International Status Conference - Lead Projects \"Human-Computer Interaction\" Saarbrücken 2001, page 79–89. Berlin, DLR, (2001)
Carl J. Friedrich. Privacy, volume XIII of NOMOS. Yearbook of the American Society for Political and Legal Philosophy, Atherton Press, New York, (1971)
Carl J. Friedrich. Privacy, volume XIII of NOMOS. Yearbook of the American Society for Political and Legal Philosophy, Atherton Press, New York, (1971)