Dear all, Please let me announce the publication of the following book V. Brattka, H. Diener, D. Spreen (eds.), Logic, Computation, Hierarchies (Festschrift in honour of Victor L. Selivanov), DeGruyter, Berlin, Boston, 2014, x + 414. Further details at http://www.degruyter.com/view/product/429641?rskey=gsPvAq&result=9 Best wishes, Dieter Spreen