On spatial stabilization of dielectric barrier discharge microfilaments by residual heat build-up in air Jozef Ráhel, Zsolt Szalay, Jan Čech and Tomás Morávek Eur. Phys. J. D, 70 4 (2016) 92 Published online: 19 April 2016 DOI: 10.1140/epjd/e2016-70061-5