In a previous question I posted a question about wighted $L^\infty$ spaces. These functional spaces can be defined as: for $a\geq 0$, let consider the space $W_a$ of all measurable vector fields $f$ in $\mathbb{R}^3$, such that $$ \| f \|_{W_a} = \mathrm{ess \, sup}_{x\in \mathbb{R^3}} |x|^a f(x) < \infty. $$
Do you know some references where I can find the main properties of these weighted spaces ?