Hölder continuity of weak solutions to subelliptic equations with rough coefficients /
Sawyer, E. T.(Eric T.),1951-
Wheeden, Richard L.
Providence, R.I. : American Mathematical Society,
c2006.
"Volume 180, number 847 (first of 5 numbers)."
Includes bibliographical references (p. 153-154).
Differential equations, Partial
Differential equations, Hypoelliptic