Scattering polarization due to light source anisotropy - II. Envelope of arbitrary shapeR. Ignace, M. B. Al-Malki, J. F. L. Simmons, J. C. Brown, D. Clarke and J. C. CarsonA&A, 496 2 (2009) 503-511DOI: https://doi.org/10.1051/0004-6361:200811214