@techreport{,
TITLE = {On algorithms for online topological ordering and sorting},
AUTHOR = {Katriel, Irit},
LANGUAGE = {eng},
NUMBER = {MPI-I-2004-1-003},
INSTITUTION = {Max-Planck-Institut f{\"u}r Informatik},
ADDRESS = {Saarbr{\"u}cken},
YEAR = {2004},
DATE = {2004-02},
TYPE = {Research Report},
}