Pavel Bochev and David Day
A least-square method for consistent mesh tying.
Int. J. Numer. Anal. Mod., 4 (2007), pp. 342-352. Abstract
Day D, Bochev P
Analysis and computation of a least-squares method for consistent mesh tying
J COMPUT APPL MATH, 218, 1(2008), pp. 21-33