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belonging to the Gibbons-Hawking class [28] with an S'-action and known also as Heisenberg metric [32] (see also [3, 52, 19, 17, 57]).

Table 3 belonging to the Gibbons-Hawking class [28] with an S'-action and known also as Heisenberg metric [32] (see also [3, 52, 19, 17, 57]).