[en] Double-phonon vibrations are well known in the low-lying spectra of many spherical nuclei. Their counterparts in deformed nuclei however, have until very recently remained elusive and therefore, the subject of heated theoretical controversy. The authors like to present evidence for the existence of such a two-phonon (K = 4) band in ¹⁶⁸Er. This new information comes from the measurements of absolute transition strengths for the 4⁺ and 5⁺ members of the K = 4 band using the Gamma Ray Induced Doppler Broadening technique at the Institut Laue Langevin in Grenoble