The definitions of the high mass and low mass white dwarf binaries from [31] were switched. This has been corrected.
There are four classes of relativistic
binaries that are brought into contact by gravitational radiation:
low mass white dwarf-white dwarf binaries () with total mass below the Chandrasekhar mass; high
mass white dwarf-white dwarf binaries (
) with total mass
above the Chandrasekhar mass; neutron star-white dwarf binaries
(
); and neutron star-neutron star binaries
Author's comment: Typographical error
Editorial comment: Amendment requested by author on 19 Nov 2003