TY  - RPRT
TI  - Ferromagnetism. Vortex cores--smaller than small.
AU  - J Miltat
AU  - A Thiaville
PY  - 2002
DO  - 10.1126/science.1077704
UR  - https://pubmed.ncbi.nlm.nih.gov/12386324/
ID  - 12386324
ER  -