en Fryntov, Alexander; Nazarov, Fedor (). „New estimates for the length of the Erdos-Herzog-Piranian lemniscate”. Linear and Complex Analysis. 226: 49–60. arXiv:0808.0717. Bibcode:2008arXiv0808.0717F.
en Fryntov, Alexander; Nazarov, Fedor (). „New estimates for the length of the Erdos-Herzog-Piranian lemniscate”. Linear and Complex Analysis. 226: 49–60. arXiv:0808.0717. Bibcode:2008arXiv0808.0717F.