Zimmermann, R.: Corpus Juris Civilis. In: The Max Planck Encyclopedia of European Private Law, Vol. I, pp. 415 - 418 (Eds. Basedow, J.; Hopt, K. J.; Zimmermann, R.). Oxford University Press, Oxford (2012)

Zimmermann, R.: Innkeepers' Liability. In: The Max Planck Encyclopedia of European Private Law, Vol. I, pp. 892 - 895 (Eds. Basedow, J.; Hopt, K. J.; Zimmermann, R.). Oxford University Press, Oxford (2012)

Zimmermann, R.: Mixed Legal Systems. In: The Max Planck Encyclopedia of European Private Law, Vol. II, pp. 1179 - 1182 (Eds. Basedow, J.; Hopt, K. J.; Zimmermann, R.). Oxford University Press, Oxford (2012)

Zimmermann, R.: Prescription. In: The Max Planck Encyclopedia of European Private Law, Vol. II, pp. 1306 - 1310 (Eds. Basedow, J.; Hopt, K. J.; Zimmermann, R.). Oxford University Press, Oxford (2012)

Zimmermann, R.: Principles of European Contract Law. In: The Max Planck Encyclopedia of European Private Law, Vol. II, pp. 1325 - 1328 (Eds. Basedow, J.; Hopt, K. J.; Zimmermann, R.). Oxford University Press, Oxford (2012)

Zimmermann, R.: Roman-Dutch Law. In: The Max Planck Encyclopedia of European Private Law, Vol. II, pp. 1483 - 1487 (Eds. Basedow, J.; Hopt, K. J.; Zimmermann, R.). Oxford University Press, Oxford (2012)

Zimmermann, R.: Roman Law. In: The Max Planck Encyclopedia of European Private Law, Vol. II, pp. 1487 - 1491 (Eds. Basedow, J.; Hopt, K. J.; Zimmermann, R.). Oxford University Press, Oxford (2012)

Zimmermann, R.: Set-Off. In: The Max Planck Encyclopedia of European Private Law, Vol. II, pp. 1554 - 1558 (Eds. Basedow, J.; Hopt, K. J.; Zimmermann, R.). Oxford University Press, Oxford (2012)

Zimmermann, R.: Preface. In: Freedom of Testation / Testierfreiheit, pp. VII - X. Mohr Siebeck, Tübingen (2012)

Zimmermann, R.: „Wissenschaftliches Recht“ am Beispiel (vor allem) des europäischen Vertragsrechts. In: Privates Recht, pp. 21 - 48 (Eds. Bumke, C.; Röthel, A.). Mohr Siebeck, Tübingen (2012)

Zimmermann, R.: "Heiterste Sinnlichkeit und ringende Religiosität". In: Gustav Mahler, 2. Symphonie, pp. 12 - 13 (Ed. Musikakademie der Studienstiftung des deutschen Volkes). Bonn (2012)

Zimmermann, R.; MacLeod, J.: Scottish Private Law. In: The Max Planck Encyclopedia of European Private Law, Vol. II, pp. 1532 - 1536 (Eds. Basedow, J.; Hopt, K. J.; Zimmermann, R.). Oxford University Press, Oxford (2012)

Basedow, J.; Francq, S.; Idot, L. (Eds.): International Antitrust Litigation – Conflict of Laws and Coordination. Hart Publ., Oxford and Portland (2012), LX + 460 pp.

Basedow, J.; Hopt, K. J.; Zimmermann, R. (Eds.): The Max Planck Encyclopedia of European Private Law, 2 Bände. Oxford University Press, Oxford (2012), XXXVIII + 1949 pp.

Baum, H.; Puchniak, D. W.; Ewing-Cho, M. (Eds.): The Derivative Action in Asia: A Comparative and Functional Approach. Cambridge University Press, Cambridge (2012), XXIV + 452 pp.

Bumke, C.; Röthel, A. (Eds.): Privates Recht. Mohr Siebeck, Tübingen (2012), 286 pp.

Hopt, K. J.; Merkt, H.; Roth, M.: Handelsgesetzbuch. C.H. Beck, München (2012), 2393 pp.

Immenga, U.; Mestmäcker, E.-J. (Eds.): Wettbewerbsrecht, Bd. 1 Kommentar zum Europäischen Kartellrecht, Teil 1. C.H. Beck, München (2012), XXXVII + 1610 pp.

Immenga, U.; Mestmäcker, E.-J. (Eds.): Wettbewerbsrecht, Bd. 1 Kommentar zum Europäischen Kartellrecht, Teil 2. C.H. Beck, München (2012), XXXVII + 1854 pp.

Röthel, A.; Heiderhoff, B. (Eds.): Regelungsaufgabe Paarbeziehung: Was kann, was darf, was will der Staat? Wolfgang Metzner Verlag, Frankfurt (2012), 102 pp.