Here: "Expanding Confusion: common misconceptions of cosmological horizons and the superluminal expansion of the Universe" https://arxiv.org/abs/astro-ph/0310

Here: "Expanding Confusion: common misconceptions of cosmological horizons and the superluminal expansion of the Universe" https://arxiv.org/abs/astro-ph/0310808 https://arxiv.org/abs/astro-ph/0310808