Nadine Moeller, Gregory Marouard & N. Ayers, Discussion of Late Middle Kingdom and Early Second Intermediate Period History and Chronology in Relation to the Khayan Sealings from Tell Edfu, in: Egypt and the Levant 21 (2011), pp.87-121 online PDF
K.S.B. Ryholt, The Political Situation in Egypt during the Second Intermediate Period, c.1800–1550 BC, Carsten Niebuhr Institute Publications, vol. 20. Copenhagen: Museum Tusculanum Press, 1997, online
scribd.com
Thomas Schneider: Ancient Egyptian Chronology - Edited by Erik Hornung, Rolf Krauss, And David a. Warburton, online, p. 187
