Anomalous behavior of displacement correlation function and strain in lanthanum cobalt oxide analyzed both from X-ray powder diffraction and EXAFS data av Efimov, V, Sikolenko, V, Troyanchuk, IO, Karpinsky, D, Efimova, E, Tiutiunnikov, SI, Savenko, BN, Novoselov, D, Prabhakaran, D