- Height functions on singular surfaces parameterized by smooth maps $\mathcal{A}$-equivalent to $H_k$ We study singularities of height functions on singular surfaces in R^3 parameterized by smooth map-germs A-equivalent to H_k in Mond's classification, and the versality of the family of the height functions. We also study relations of the singularities of the height functions with the parabolic locus of these singular surfaces. 1 authors · Aug 24