The cataclysmic variables UZ Boo and WX Cet both resemble WZ Sge in showing large outburst amplitudes ( ~ 8 mag), slow declines from outbursts, and long intervals between outbursts. It is proposed that these three stars form a distinct sub-group of the dwarf novae and that they may all have similar binary structure.
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J. Bailey (1979) studied this question.