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Smoothing splines on Riemannian manifolds, with applications to 3D shape space
Kim, Kwang‐Rae, (2020)
Shape-space smoothing splines for planar landmark data
Kume, Alfred, (2007)
Statistical inference for functions of the covariance matrix in the stationary Gaussian time-orthogonal principal components model
Dryden, Ian, (2010)