TY - RPRT TI - Vortex-core structure observed with a scanning tunneling microscope. AU - HF Hess AU - RB Robinson AU - JV Waszczak PY - 1990 DO - 10.1103/physrevlett.64.2711 UR - https://pubmed.ncbi.nlm.nih.gov/10041790/ ID - 10041790 ER -