@article{CRMATH_2004__338_9_667_0,
     author = {Piotr M. Hajac and Masoud Khalkhali and Bahram Rangipour and Yorck Sommerh\"auser},
     title = {Hopf-cyclic homology and cohomology with coefficients},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {667--672},
     publisher = {Elsevier},
     volume = {338},
     number = {9},
     year = {2004},
     doi = {10.1016/j.crma.2003.11.036},
     language = {en},
}