SARAJEVO (Bosnia and Herzegovina), November 6 (SeeNews) â Zeljeznice Republike Srpske [BANJ:ZERS-R-A], the railway operator of Bosnia's Serb Republic entity, said on Wednesday it swung to a net profit of 4.1 million marka ($2.3 million/2.1 million euro) in the first nine months of 2019, from a 7.5 million marka loss a year earlier.