Allan Borodin, Ronald Fagin, et al.
Journal of Symbolic Computation
An elementary proof is presented of an asymptotic estimate for the number (up to isomorphism) of finite relational structures, under a quite general definition of "relational structure". © 1977.
Allan Borodin, Ronald Fagin, et al.
Journal of Symbolic Computation
Ronald Fagin, Joseph Y. Halpern, et al.
Journal of the ACM
Ronald Fagin, Phokion G. Kolaitis, et al.
ACM TODS
Ronald Fagin, Joseph Y. Halpern, et al.
Journal of the ACM