Juhl A. Families of conformally covariant differential operators, q-curvature and holography / A. Juhl, 2009 r=on-line. - Текст : электронный.
Baum H. Conformal differential geometry : q-curvature and conformal holonomy / H. Baum, A. Juhl, 2010 r=on-line. - Текст : электронный.
Oberwolfach Seminars. Vol. 40 : Conformal differential geometry. Q-curvature and conformal holonomy / H. Baum, A. Juhl, 2010. - X, 152 p. - Текст : непосредственный.