D. E. Crabtree

An identity for the Schur complement of a matrix

E. Haynsworth, D. E. Crabtree, 1969 .

Bounds for determinants

D. E. Crabtree, D. W. Bailey, 1969 .

CHARACTERISTIC ROOTS OF M-MATRICES

D. E. Crabtree, Douglas E. Crabtree, 1966 .

Applications of $M$-matrices to non-negative matrices

D. E. Crabtree, Douglas E. Crabtree, 1966 .

On the characteristic roots of matrices

D. E. Crabtree, Douglas E. Crabtree, 1965 .