by Chuong, Nguyen Minh
Published in Nonlinear analysis (30.11.2005)

by Goodman, T. N. T., Lee, S. L., Tang, W. S.
Published in Advances in computational mathematics (01.02.1993)

by Keinert, Fritz
Published in Computational Complexity (2012)

by Haf, H., Hochmuth, R.
Published in Applicable analysis (01.12.2004)