Published in: Det Kongelige Norske videnskabers selskab: Skrifter ; 1990,3

Published in: Det Kongelige Norske videnskabers selskab: Skrifter ; 1989,1

Published in: ZDM – Mathematics Education, 53 (2021) 2, Seite 305-316

Published in: International Journal of Research in Undergraduate Mathematics Education, 7 (2021) 2, Seite 189-210

Published in: Uniped, 38 (2015) 4, Seite 319-326

Published in: Research in Mathematics Education, 15 (2013) 2, Seite 201-202

Published in: Rocky Mountain Journal of Mathematics, 34 (2004) 3

Published in: The Rocky Mountain Journal of Mathematics, 34 (2004) 3, Seite 1121-1130

Published in: Annales Polonici Mathematici, 60 (1995) 3, Seite 289-297

Published in: Complex Variables, Theory and Application: An International Journal, 22 (1993) 1-2, Seite 85-92

Published in: Numerical Algorithms, 3 (1992) 1, Seite 383-391

Published in: Proceedings of the American Mathematical Society, 118 (1993) 1, Seite 189-196

Published in: Proceedings of the American Mathematical Society, 118 (1993) 1, Seite 189

Published in: Proceedings of the American Mathematical Society, 118 (1993) 1, Seite 189-196

Published in: Journal of Mathematical Analysis and Applications, 258 (2001) 2, Seite 466-489

Published in: Journal of Computational and Applied Mathematics, 179 (2005) 1-2, Seite xiii-xiv

Published in: Journal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 69 (2000) 3, Seite 303-315

Published in: Journal of Agricultural and Food Chemistry, 60 (2012) 41, Seite 10293-10301