1. Lecture Notes in Mathematics, Vol. 217;Jech, Thomas J.,1971
2. Trees;Jech, Thomas J.;J. Symbolic Logic,1971
3. R. B. Jensen and H. Johnsbråten, A new construction of a nonconstructible Δ^{₃¹} subset of 𝜔, Univ. of Oslo preprint series, 1973, no. 3.
4. Cartesian products of metric Baire spaces;Krom, M. R.;Proc. Amer. Math. Soc.,1974