1. Abdo A. A., Ackermann M., Ajello M., et al. 2009, Science, 325, 840
2. André P., Di Francesco J., Ward-Thompson D., et al. 2014, in Protostars and Planets VI, eds Beuther H., Klessen R. S., Dullemond C. P., Henning T., p. 27
3. André P., Men’shchikov A., Bontemps S., et al. 2010, A &A, 518, L102
4. Berry D. S. 2015, Astronomy and Computing, 10, 22
5. Berry D. S., Gledhill T. M., Greaves J. S., Jenness T. 2005, in Astronomical Society of the Pacific Conference Series, Vol. 343, Astronomical Polarimetry: Current Status and Future Directions, eds Adamson A., Aspin C., Davis C., Fujiyoshi T., p. 71