TY - JOUR PB - American Physical Society ID - 10.1103/Physics.3.33 TI - Observing the dance of a vortex−antivortex pair, step by step JF - Physics JA - Physics J1 - PHYSICS VL - 3 IS - SP - 33 EP - PY - 2010/04/19/ UR - http://link.aps.org/doi/10.1103/Physics.3.33 A1 - Engels, Peter ER -