Geodesic
Bianchi type-I cosmological stiff fluid model in wesson's theory
Theoretical and applied mechanics, Tome 21 (1995) no. 1, p. 83 
G. Mohanty; Sk.Md. Duad. Bianchi type-I cosmological stiff fluid model in wesson's theory. Theoretical and applied mechanics, Tome 21 (1995) no. 1, p. 83 . http://geodesic.mathdoc.fr/item/TAM_1995_21_1_a7/
@article{TAM_1995_21_1_a7,
     author = {G. Mohanty and Sk.Md. Duad},
     title = {Bianchi {type-I} cosmological stiff fluid model in wesson's theory},
     journal = {Theoretical and applied mechanics},
     pages = {83 },
     year = {1995},
     volume = {21},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAM_1995_21_1_a7/}
}
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Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

It is shown that there exists spatially homogeneous and isotropic Bianchi type-I cosmological model in Wesson's [1] Scale-invariant theory of gravitation when the source of the gravitational field is a perfect fluid characterised by the equation of state $p=pc^2$. Consequently the degenerated vacuum cosmological model, in this theory, is presented and the physical properties are stutied.