1. Some rigorous results concerning the crossover behavior of the Ising model with lattice anisotropy
2. C.A.W. Citteur and P.W. Kasteleyn, Critical behaviour of Ising systems on extremely anisotropic lattices I, Physica, to be published.
3. C.A.W. Citteur, Critical behaviour of Ising systems on extremely anisotropic lattices II, Physica, to be published.
4. C.A.W. Citteur and P.W. Kasteleyn, Critical behaviour of Ising systems on extremely anisotropic lattices V, Physica, to be published.
5. Concavity of Magnetization of an Ising Ferromagnet in a Positive External Field