@CONFERENCE\{IMM2000-02234, author = "S. K. Johansen and O. Bang and M. P. S{\o}rensen", title = "Fusion arrest and collapse phenomena due to Kerr-nonlinearity in quadratic media", year = "2000", pages = "99-101", booktitle = "Nonlinear Optics: Materials, Fundamentals and Applications, {OSA} Technical Digest, Optical Society of America", volume = "", series = "", editor = "", publisher = "", organization = "", address = "", url = "http://www2.compute.dtu.dk/pubdb/pubs/2234-full.html" }