@article{SIGMA_2011_7_a12,
     author = {Haret C. Rosu and Kira V. Khmelnytskaya},
     title = {Shifted {Riccati} {Procedure:} {Application} to {Conformal} {Barotropic} {FRW} {Cosmologies}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2011},
     volume = {7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2011_7_a12/}
}