@techreport{TR-03-04,
 author = {Luboš Brim and Ivana Černá and  Lukáš Hejtmánek},
 institution = {Faculty of Informatics, Masaryk University},
 number = {FIMU-RS-2003-04},
 title = {Parallel Algorithms for Detection of Negative Cycles },
 year = {2003}
}