1. A free boundary optimization problem involving weighted areas;Acker;Z. Angew. Math. Phys.,1978
2. Extremalprobleme in der Funktionentheorie;Ahlfors;Ann. Acad. Sci. Fenn. Ser. A I Math.,1958
3. Conformal Invariants – Topics in Geometric Function Theory;Ahlfors,1973
4. Module of annulus;Akaza;Nagoya Math. J.,1961
5. Generalized elliptic integrals and modular equations;Anderson;Pacific J. Math.,2000