On summability with respect to an arbitrary measure of functions from Sobolev–Slobodetsky spaces

Necesary and sufficient conditions for boundedness of emdedding operators: $L_p^\ell\to L_q(\mu,\mathbb R^n)$ and $W_p^\ell\to L_q(\mu,\mathbb R^n)$ ($q>p>1$ or $q\ge p=1$) are found.