Gao, G. R., Hovenier, J. N., Yang, Z. Q., Baselmans, J. J. A., Baryshev, A., Hajenius, M., et al. (2005). A novel terahertz heterodyne receiver based on a quantum cascade laser and a superconducting bolometer. In _Proc. 16<sup>th</sup> Int. Symp. Space Terahertz Technol._ (pp. 19&ndash;23). Göteborg, Sweden.