Darba-EJA Instructions to Authors        
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Submission of manuscripts. Manuscripts should be sent to one of the two Editors-in-Chief. Two copies are required. They should be typewritten on one side of the paper, double-spaced and with generous margins. Figures and illustrations should be on separate pages. Manuscripts can be submitted also as PDF files via e-mail to the Editors-in-Chief. All papers will be published in English. Principally, the manuscripts should be written in English but materials in Russian will be also considered and, if accepted for publication, they will be translated in English in the Editorial office. Authors may not submit papers that are under consideration for publication elsewhere.
The publisher encourages submission of electronically prepared manuscript in LATEX. The LATEX file of the manuscript should be sent after the paper has been accepted for publication. It can be mailed on a PC diskette or sent via e-mail to geno@fmi.uni-sofia.bg.

Form of manuscript. The first page should contain the title, the name, affiliation and address of each author, and a short abstract of at most 15 lines. Page 2 should contain an abbreviated form of the title (less than 43 characters) and the address of the author to whom galley proofs should be sent. The equation number should be placed on the left-hand side of the page. Each section should be numbered.

References. The list of references must be in alphabetical order. Titles of papers in Russian should be translated into English. Abbreviations of names of journals should follow the standard form established by Mathematical Reviews. Two typical examples (authors names should be in the small caps font):
[1] Aleksei Shadrin, Error bounds for Lagrange interpolation, J. Approx. Theory 80, 1(1995), 25--49.
[2] N. P. Korneichuk, Exact Constants in Approximation Theory, Nauka, Moscow 1987 (in Russian); English transl.: Cambridge University Press, 1991.

Copyright. With the acceptance of a paper for publication all rights related to the reproduction pass to the publisher.

Proofs. Authors receive only one set of proofs for corrections and will be responsible for the expense of making excessive changes.

Offprints. The publisher will supply 30 offprints free of charge of each paper published.

Open problems. Open problems should be sent to the Open Problems Editor (Sergei Konyagin).