M. Dihlmann, and B. Haasdonk. PAMM, Proc. Appl. Math. Mech., Special Issue: 84th Annual Meeting
of the International Association of Applied Mathematics and Mechanics
(GAMM), Novi Sad 2013; Editors: L. Cvetkovic, T. Atanackovic and
V. Kostic, 13 (1):
3-6(2013)