1. Centro
de Quı́mica Estrutural, Complexo I, Instituto Superior
Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
2. Department
of Veterinary Microbiology, Wroclaw University of Environmental and Life Sciences, ul. Norwida 31, 50-375 Wroclaw, Poland
3. Faculty
of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wroclaw, Poland