Feshbach spectroscopy and analysis of the interaction potentials of ultracold sodium - Knoop, Steven; Schuster, Tobias; Scelle, Raphael; Trautmann, Arno; Appmeier, J.; Oberthaler, Markus K.; Tiesinga, E.; Tiemann, E. (Physical review. A, Atomic, molecular, and optical physics, 2011)