The Asymptotic Value of the Circle-Packing Rigidity Constants Sn. - Peter Doyle; Zheng-Xu He; Burt Rodin (Discret. Comput. Geom., 1994)

Second Derivatives of Circle Packing and Conformal Mapping. - Peter Doyle; Zheng-Xu He; Burt Rodin (Discret. Comput. Geom., 1994)