Synthesis of Liquid-Crystalline Polyesters with (η<sup>4</sup>-Cyclobutadiene)cobalt Moieties in the Main Chain RozhanskiiIgor L. TomitaIkuyoshi EndoTakeshi 1997 Synthesis of Liquid-Crystalline Polyesters with (η<sup>4</sup>-Cyclobutadiene)cobalt Moieties in the Main Chain