
JETP, Vol. 37,
No. 5,
p. 747 (November 1973)
(Russian original - ZhETF,
Vol. 64,
No. 5,
p. 1475,
November 1973
)
Singularities of the cosmological model of the Bianchi IX type according to the qualitative theory of differential equations
O.I. Bogoyavlenskii, S.P. Novikov
Received: January 15, 1973
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