Oscillator strengths of the 4s4p 1,3P1 ↦ 4snd1,3D2 transitions of neutral calcium S. U. Haq, R. Ali, M. A. Kalyar, M. Rafiq, A. Nadeem and M. A. Baig Eur. Phys. J. D, 50 1 (2008) 1-8 Published online: 15 October 2008 DOI: 10.1140/epjd/e2008-00193-0