The Chen–Gackstatter surfaces, constructed in 1982, are a family of complete orientable minimal surfaces of that generalize Enneper's minimal surface by adding handles that increase its topological genus or by adding -fold dihedral symmetry. In cases with genus values greater than one, the formulas for the surfaces involve generalized hypergeometric functions.
 M. Weber. "Chen–Gackstatter Surface." Minimal Surface Archive. (Jun 12, 2014) www.indiana.edu/~minimal/archive/Tori/Tori/Chen-Gackstatter/web/index.html.
 E. C. Thayer, "Higher-Genus Chen–Gackstatter Surfaces and the Weierstrass Representation for Surfaces of Infinite Genus," Experimental Mathematics, 4(1), 1995 pp. 19–39. doi:10.1080/10586458.1995.10504305.
 F. J. López and F. Martín, "Complete Minimal Surfaces in ," Publicacions Matematiques, 43(2), 1999 pp. 341–449. www.ugr.es/~fmartin/dvi/survey.pdf.