ALT, HELMUT and GUIBAS, LEONIDAS (1999). Discrete geometric shapes: Matching, interpolation, and approximation. In SACK, JÖRG and URRUTIA, JORGE (eds.), Handbook of Computational Geometry. North-Holland, Amsterdam.

   BARONI, MARIO and JACOBONI, CARLO (1978). Proposal for a Grammar of Melody. Preses de l’Universite de Montreal, Montreal.

   BJÖRNER, ANDERS (1995). Topological Methods. In RONALD L. GRAHAM, LASZLO LOVASZ, MARTIN GRÖTSCHEL (ed.), Handbook of Combinatorics. Elsevier, Amsterdam.

   BUTEAU, CHANTAL (1997). Motivic Topologies and Their Meaning in the Motivic Analysis of Music. Ph.D. thesis, Université Laval Québéc.

   BUTEAU, CHANTAL (2001). Reciprocity between Presence and Content Functions on a Gestalt Composition Space. Tatra Mountain Mathematical Journal, 23:17-45.

   BUTEAU, CHANTAL and MAZZOLA, GUERINO (2000). From Contour Similarity to Motivic Topologies. Musicae Scientiae, IV(2):125-149.

   HAUSDORFF, FELIX (1914 = 2002). Grundzüge der Mengenlehre. Springer, New York, Leipzig.

   HECKENBACH, FRANK (1998). Ressources for Homology Calculation. http://www.mi.uni-erlangen.de/ heckenb.

   MAZZOLA, GUERINO (2002). The Topos of Music. Birkhäuser, Basel.

   MAZZOLA, GUERINO and ZAHORKA, OLIVER (1993-1995). Geometry and Logic of Musical Performance I, II, III. Snsf research reports, Zürich.

   MAZZOLA, GUERINO and ZAHORKA, OLIVER (1996). Topologien gestalteter Motive in Kompositionen. In AUHAGEN, WOLFGANG. ET AL. (ed.), Festschrift J. P. Fricke. Universität Köln, Köln.

   SCHAFFRATH, HELMUT (1995). The Essen Folksong Collection. http://www.musedata.org.

   SELFRIDGE-FIELDS, ELEANOR (1998). Conceptual and Representational Issues in Melodic Comparison. In HEWLETT, WALTER and SELFRIDGE-FIELDS, ELEANOR (eds.), Melodic Similarity. Concepts, Procedures, and Applications. MIT Press, Cambridge.

   SPANIER, EDWIN H. (1966). Algebraic Topology. McGraw-Hill, New York.

   SPEISER, ANDREAS (1945). Die mathematische Denkweise. Birkhäuser, Basel.

   WEYL, HERMANN (1981). Symmetrie. Birkhäuser, Basel.