  With center of mass energies up to 209 GeV of LEP II, massive W and Z bosons
can be produced in pairs and jointly with photons. This allows to study
boson-boson couplings. Since the W and Z bosons are unstable and decay into
fermions, two- and four-fermion final states, accompanied possibly by photons,
play an important role for these measurements. The couplings of the W to other
bosons have been measured to be g1Z = 0.990+0.023-0.024, kappa_gamma =
0.896+0.058-0.056, and lambda_gamma = -0.023 +0.025 -0.023. They are in
agreement with the Standard Model expectation of g1Z = 1, kappa_gamma = 1, and
lambda_gamma = 0. No sign for couplings of three neutral bosons, parametrized
by the couplings f_i^V and h_i^V, and for anomalous couplings of four gauge
bosons, parametrized by a_0, a_n and a_c has been found.
