Preliminary data on PGES (platinum group elements) and REE (rare earth elements) in urban soils in Novi Sad (Serbia) in relation to car catalytic converters emission, Manojlovic, M., Angelone Massimo, Armiento Giovanna, Cabilovski R., Ciric V., Montereali Maria Rita, Crovato Cinzia, De Cassan Maurizio, Massanisso P., and D. Vidojevic , 9th Congress protection of soil as a factor of sustainable development of rural areas and improvement of environment, 11/2015, (2015)