Planning in time-management as sequencing given jobs with interval prozessing times / Yuri N. Sotskov, United Institute of Informatics Problems, National Academy of Sciences of Belarus, Minsk, Belarus; Natalia G. Egorova, United Institute of Informatics Problems, National Academy of Sciences of Belarus, Minsk, Belarus; Frank Werner, Faculty of Mathematics, Institute of Mathematical Optimization, Otto-von-Guericke University, Magdeburg, Germany