  Multiband effects can lead to fundamentally different electronic behavior of
solids, as exemplified by the possible emergence of Fermi surfaces of
Bogoliubov quasiparticles in centrosymmetric superconductors which break
time-reversal symmetry. We extend the analysis of possible pairing symmetries,
the corresponding nodal structure, and the Bogoliubov Fermi surfaces in two
directions: We include nonlocal pairing and we consider internal degrees of
freedom other than the effective angular momentum of length $j=3/2$ examined so
far. Since our main focus is on the Bogoliubov Fermi surfaces we concentrate on
even-parity pairing. The required symmetry analysis is illustrated for several
examples, as a guide for the reader. We find that the inclusion of nonlocal
pairing leads to a much larger range of possible pairing symmetries. For
infinitesimal pairing strength, we find a simple yet powerful criterion for
nodes in terms of a scalar product of form factors.
