M.J.A. de Dood, J. Kalkman, C. Strohhöfer, J.C.F. Michielsen and J.A. van der Elsken, Hidden transition in the "unfreezable water" region of the PVP-water system, J. Phys. Chem. B 107, 5906-5913 (2003)
I. Shvarchuck, C. Buggle, D.S. Petrov, M. Kemmann, T.G. Tiecke, W. von Klitzing, G.V. Shlyapnikov and J.T.M. Walraven: Focusing of Bose-Einstein condensates in free flightIn: Interactions in ultracold gases: from atoms to molecules, Weinheim: Wiley, 2003. - pp. 415-420