This article is cited in 1 paper

Causal structure of left-invariant Lorentz metrics on the group $M_2\otimes\mathbf{R}^2$

A. V. Levichev


UDC: 514.7:514.82

Received: 17.02.1988

 English version: Siberian Mathematical Journal, 1990, 31:4, 607–614

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