V. T. Dovgij, A. A. Kalkin, T. G. Astaf`eva, F. G. Bar`yakhtar, and G. I. Yampolskaya, Peculiarities of domain walls with vertical Bloch lines at low temperatures, Low Temp. Phys. 23, (1997) [Fiz. Nizk. Temp. 23, 923-926, (1997)].