@article{BaeklerHehlNester2011, author = {Baekler, Peter and Hehl, Friedrich W. and Nester, James M.}, title = {Poincar{\´e} gauge theory of gravity: Friedman cosmology with even and odd parity modes: Analytic part}, journal = {Physical Review D}, volume = {83}, number = {2}, doi = {10.1103/physrevd.83.024001}, year = {2011}, }