19092 J. Aczel: Lectures on functional equations and their applications.
Dover 2006, 510p. Eur 40.

19057 Claudi Alsina/Maurice Frank/Berthold Schweizer: Associative
functions. World Scientific 2006, 250p. Eur 50.

G. Belitskii/V. Tkachenko: One-dimensional functional equations.
Birkhäuser 2003, 210p. Eur 98.

19056 B. Crstici: Review of the book "Associative functions" by
Alsina/Frank/Schweizer. MR 2222258.

19300 Peter Flor/Gerald Edgar/...: Fractional iterations of functions.
Discussion on sci.math.research 2005, 7p.

19059 Harald Fripertinger: Group actions and the functional equation
of the mean sun. Internet ca. 2001, 5p.

19060 Harald Fripertinger: The functional equation of the mean sun
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19298 Harald Fripertinger/Ludwig Reich: On covariant embeddings of a linear
functional equation with respect to an analytic iteration group.
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19209 Harald Fripertinger/Ludwig Reich: On covariant embeddings of a linear
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19058 Harald Fripertinger/Jens Schwaiger: Some applications of functional
equations in astronomy. Grazer Math. Ber. 344 (2001), 1-6

19473 Hans-Heinrich Kairies: Functional equations for peculiar functions.
Aequationes math. 53 (1997), 207-241.

Marek Kuczma/Bogdan Choczewski/Roman Ger: Iterative functional equations.
Cambridge UP 1990, 570p. Eur 145.

19055 Kin Li: Functional equations. Math. Excalibur 8/1 (2003), 1-4.

6135 Jens Schwaiger: Funktionalgleichungen. Grundlegende Gleichungen mit
Anwendungen, ein kleiner Überblick. 6031 Chatterji/, 1-13.

19054 Gunter Semmler: Funktionalgleichungen. Internet 2004, 7p.

19472 Joel Shapiro: Composition operators and Schröder's functional
equation. Contemp. Math. 213 (1998), 213-228.