1. Haschick A D , Baan W A .A very bright water vapour maser source in the galaxy NGC3079.Nature, 1985, 314.
2. WmA. aan.Powerful extragalactic masers.Nature, 1985.
3. Baan, Willem A .Diagnostics of the power supply.Nature, 1997, 386(6624):445-446.
4. Klockner H R , Baan W A , Garrett M A .Investigation of the obscuring circumnuclear torus in the active galaxy Mrk231.Nature, 2003, 421(6925):p. 821-823.
5. Baan, Willem A.; An, Tao; Henkel, Christian; Imai, Hiroshi; Kostenko, Vladimir; Sobolev, Andre. H2O MegaMaser emission in NGC 4258 indicative of a periodic disc instability.Nature Astronomy, 2022,Volume 6, p. 976-983