@techreport{WolfBrandtMohammadzadeh1998, author = {Thomas Wolf and Andreas Brandt and Majid Mohammadzadeh}, title = {Computer algebra algorithms and routines for the computation of conservation laws and fixing of gauge in differential expressions}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {SC-98-05}, language = {eng}, year = {1998} }