[peer-reviewed]
& Udo Simon.
Reprinted in: Maribel Fierro (ed.): Orthodoxy and Heresy in Islam: Critical Concepts in Islamic Studies. Vol. I. (Critical Concepts in Islamic Studies) London, New York: Routledge, Taylor & Francis Group, 2014, 201–212.

Motika, Raoul, and Robert Langer (2005) "Alevitische Kongregationsrituale: Transfer und Re-Invention im Transnationalen Kontext [= Alevi Congregational Rituals: Transfer and Re-Invention in Transnational Context]." In Migration und Ritualtransfer: Religiöse Praxis der Aleviten, Jesiden und Nusairier zwischen Vorderem Orient und Westeuropa, ed: Robert Langer, Raoul Motika and Michael  Ursinus, 73-107. Frankfurt am Main, [… u. a.]: Peter Lang, Europäischer Verlag der Wissenschaften

Langer, Robert (2010) "‘Marginalised Islam’: The Transfer of Rural Rituals into Urban and Pluralist Contexts and the Emergence of Transnational ‘Communities of Practice’." In Ritual Matters, ed: Christiane Brosius and Ute Hüsken, 88--123. London, New York, New Delhi: Routledge, Taylor & Francis Group.

Langer, Robert (2008) "The Alevi Animal Sacrifice (Kurban) between Professionalisation and Substitution: Recent Developments in the Context of Migration and Urbanization." In Transformations in Sacrificial Practices: From Antiquity to Modern Times: Proceedings of an International Colloquium, Heidelberg 12–14, July 2006. , ed: Claus Ambos, Axel Michaels and Eftychia Stavrianopoulou, 25 [mit 9 Abb.]. Berlin, Münster: LIT Verlag

[peer-reviewed]
EJTS, Thematic issue: “Contemporary Sufism and the Quest of Spirituality: Transgressing Borders, Transgressing Categories”. Ed. Beatrice Hendrich [Papers held at the World Congress for Middle Eastern Studies, WOCMES 2010, Barcelona, July 23rd 2010]

Langer, R. (Mai 2012). "Myrtenzweig und Zuckerhut: Ein Sāl-Ritual im Zarathustrierviertel von Yazd. Blumen und Süßigkeiten: Festschrift für Seyfeddin Najmabadi zu seinem 90. Geburtstag." In J. Zimmermann (Ed.). Heidelberg, Seminar für Sprachen und Kulturen des Vorderen Orients: 13 S.

Langer, Robert. "Almanya’daki Alevi Ritüellerinde ve Kültürel-Dinsel Yaşamında Anadolu Kökenli Müziğin Önemi (= the Importance of Music with Anatolian Roots in the Cultural-Religious Life and Rituals of the Alevis in Germany)." In Gap Bölgesinde Alevi Bektaşi Yerleşmeleri ve Şanlıurfa Kültür Mozayığında Kısas: Uluslararası Sempozyum (Sempozyum Bildirileri, 25-27 Mayıs 2007, Şanlıurfa). Birinci Baskı., edited by Doğan Bermek, Ali Yaman, Saadet Açıkelli and Bedirhan Toprak, 227–33. İstanbul: CEM Vakfı, 2007.

Langer, Robert. "Alevitische Rituale." In Aleviten in Deutschland: Identitätsprozesse Einer Religionsgemeinschaft in Der Diaspora, edited by Martin Sökefeld, 65-107. Bielefeld: Transcript, 2008.
Erratum: Throughout "razilik", read "rızalık".

Langer, Robert. "Schreine Und Wallfahrtsstätten Der Zarathustrier: Zur 'Sakralisierten Topographie' Irans [= Shrines and Pilgrimage Places of the Zoroastrians: The 'Sacralised Topography' of Iran]." In Heilige Orte in Asien: Räume Göttlicher Macht Und Menschlicher Verehrung. 1. Aufl., edited by Angelika C.; Messner and Konrad Hirschler, 219-56 (m. 30 Abb.). Hamburg, Schenefeld: EB-Verlag (ebv) Dr. Brandt, 2006.