Guyer-Krumhansl–type heat conduction at room temperature P. Ván, A. Berezovski, T. Fülöp, Gy. Gróf, R. Kovács, Á. Lovas and J. Verhás EPL, 118 5 (2017) 50005 Published online: 16 August 2017 DOI: 10.1209/0295-5075/118/50005