[1] K. A Baker A. F. Pixley:
Polynomial Interpolation and the Chinese Remainder Theorem for Algebraic Systems. Math. Z. 143 (1975), 165-174.
MR 0371782
[2] M. Istinger H. K. Kaiser A. F. Pixley:
Interpolation in congruence permutable algebras. preprint (Mathem. Schriften Kassel), 1-8.
MR 0567559
[3] A. F. Pixley:
Charakterizations of arithmetical varieties. Algebra Univ. 9 (1979), 87-98.
MR 0508670