Copyright

Creative Commons License  This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. The authors will retain the copyrights of their submitted manuscripts for all purposes. The readers may “Share-copy and reorganize the material in any medium or format” and “transform and build upon the material”. The readers must give appropriate credit to the source of the material and indicate if changes were made to the material. Readers may not use the material for commercial purposes. The readers may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.