References are cited in the text by name and year in parentheses
and should look as follows:
(Smith 1970, 1980), (Ekeland et al. 1985, Theorem 2), (Jones and Jaffe
1986; Farrow 1988, Chap.;SPMnbsp;2). If the name is part of the sentence
only the year may appear in parentheses,
e.g. Ekeland et al. (1985, Sect.;SPMnbsp;2.1)
The reference list should contain all citations occurring in the text,
ordered alphabetically by surname (with initials following). If there
are several works by the same author(s) the references should be listed
in the appropriate order indicated below:
#alpherate449#
If there are several works by the same author(s) and in the same year,
but which are cited separately, they should be distinguished by
the use of ``a'', ``b'' etc., e.g. (Smith 1982a), (Ekeland et al. 1982b).