Institution: | aInstitute of Chemistry, Faculty of Sciences, University of Novi Sad, 21 000 Novi Sad, Trg Dositeja Obradovi?a 3, Yugoslavia;bICN Jugoslavija, Institute, 11 000 Beograd, 29. Novembar 111, Yugoslavia;cInstitute of Physics, Faculty of Sciences, University of Novi Sad, 21 000 Novi Sad, Trg Dositeja Obradovi?a 2, Yugoslavia |