@article{benvenho_hümmelgen_2001,  title={Positive charge transport in an alternating oligo-p-phenylenevinylene-derivative/aliphatic-segment block copolymer},  volume={4},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392001000200016},  DOI={10.1590/S1516-14392001000200016},  number={2},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Benvenho, A.R.V. and Hümmelgen, I.A.},  year={2001},  pages={133–136} }