We have taken every effort to provide a high quality of this website.

Nevertheless, there may be errors in the program. Therefore, we can not take responsibility for applying this website: the user bears fully the responsibility for using the calculated results. In particular, it is the user's task to check input data for correctness and consistency (take care to use the correct units!), and to control the results for reliability.

In case errors are found, it would be of immense help to contact the authors: please, send an e-mail to