Stolichen Avtotransport, the public bus transport company of Bulgaria’s capital Sofia, said that it has opened a 55.6 million levs ($32.9 million/28.4 million euro) tender for a three-year contract for supply of diesel fuel.The contract envisages supply of a total of 32 million litres of diesel fuel, with deliveries expected daily, Stolichen Avtotransport said in a tender notice on Monday.The contract will enter into force on December 25.Payment will be made 30 days following delivery.(1 euro = 1.95583 levs)