Testing the predicted mass-loss bi-stability jump at radio wavelengths P. Benaglia, J. S. Vink, J. Martí, J. Maíz Apellániz, B. Koribalski and P. A. Crowther A&A, 467 3 (2007) 1265-1274 Published online: 03 April 2007 DOI: 10.1051/0004-6361:20077139