Two-weight norm inequalities for potential type integral operators in the case $p>q>0$ and $p>1$
Tom 216 / 2013
Studia Mathematica 216 (2013), 1-15 MSC: Primary 42B35; Secondary 42B25. DOI: 10.4064/sm216-1-1
Sufficient conditions for a two-weight norm inequality for potential type integral operators to hold are given in the case $p>q>0$ and $p>1$ in terms of the Hedberg–Wolff potential.