Bapat, R BKirkland, S JPati, S2012-03-192012-03-192001Linear and multilinear algebra,V49,3,P219-242http://hdl.handle.net/10263/3310enLaplacian matrixAlgebric connectivityCharecterstic setInterval graphsPertuberted lapcalian matrixFiedler vectorPerron componentPertubed laplacian matrix of a graphArticle