We are glad to inform you that the 13th number of the ISSI Newsletter has come out.

Content:

• Editorial: (W. Glänzel)
• Conference calls: NORSLIS PhD Course, Umeå
• Conference calls: 10th STIConf, Vienna
• Conference calls: 4th UK Social Networks Conf.
• Conference calls: 13th Nordic Workshop, Tampere
• Triad or Tetrad (R. Rousseau)
• China ranks second... (P. Zhou, L. Leydesdorff)
• Research focus: Science in Turkey (W. Glänzel)