3 Schwarz, H - Sciences, Wroclaw, Poland 1 Sek, D 1 Shishkin, S 2 Shishkin, S L - Shishkin,+S+L 1 Siemens AG, Berlin 1 Siemens AG, Germany 3 Siemens AG, PTD EA, Berlin, Germany 3 SIEMENS AG, PTD EA, Berlin, Germany