%A Kalli, Kyriacos %A Urbańczyk, Wacław %A SPIE Europe %A Society of Photo-optical Instrumentation Engineers %A Alsace international %A Association française des industries de l'optique et de la photonique %T Photonic crystal fibers II : 9-10 April 2008, Strasbourg, France %I SPIE %D 2008 %S Proceedings / SPIE -- the International Society for Optical Engineering %V v. 6990 %U https://ci.nii.ac.jp/ncid/BC08640230