Article Processing Charge

An article processing charge (APC) of 60,00 € is requested for papers accepted for publication.  This publication fee is not requested in case of rejection of the article. A further payment of 40 € is due in case the authors want to receive a printed copy of the issue. A further payment of 50 € is due for any figure in case the authors require colored figures in the print copy. Details for sending the payment will be given to the corresponding author after the acceptance of his paper.