We study the one-loop corrections to the three-boson vertices gammaW+ W- and ZW+- W-, and we present expressions for the dipole DELTAkappa(V) and quadrupole DELTAQ(V) form factors as a function of Q2, m(top) and m(Higgs), where Q(mu) is half of the four-momentum carried by the neutral bosons. We also discuss the relevance of our results to future experiments. where reactions of the type f(R)f(R)BAR --> W+ W- at high Q2 will be analysed and we show that (I) it might be possible, given a good experimental sensitivity, to extract valuable informations for the mass of the top quark and (II) that any measured value of DELTAkappa(V) above 10(-2) will be a signal of new physics.