Due to a printing error, the second page of the above paper (page 10180 of issue 43 of this volume) appears blank in all printed copies of the journal (it is complete in the electronic version). We would like to apologize to the author of the paper, and for any inconvenience to librarians and readers.
The affiliation of the fourth author, W F Wreszinski, was given incorrectly. He is affiliated to the Universidade de São Paulo, Instituto de Física, Caixa Postal 66318, São Paulo 05315 970, SP, Brazil, and not to the Tomsk State University. This affiliation appears incorrectly in the printed edition of the journal but has been corrected in the online edition. The first author, V G Bagrov, is affiliated to Tomsk State University and Tomsk Institute of High Current Electronics, Russia, and the second and third authors, J C A Barata and D M Gitman, are affiliated to the Universidade de São Paulo, Instituto de Física, Caixa Postal 66318, São Paulo 05315 970, SP, Brazil. This appears correctly in both the printed and online editions of the journal.