| article html file updated | 7 February 2020 05:04 CET | Update | https://www.mdpi.com/2079-3197/4/1/13 |
| article html file updated | 5 May 2019 23:09 CEST | Update | - |
| article html file updated | 26 March 2019 21:49 CET | Update | - |
| article html file updated | 29 March 2016 11:13 CEST | Update | - |
| article html file updated | 29 March 2016 07:36 CEST | Original file | - |
| article pdf uploaded. | 26 February 2016 11:09 CET | Version of Record | https://www.mdpi.com/2079-3197/4/1/13/pdf |
| article xml uploaded. | 26 February 2016 11:09 CET | Original file | https://www.mdpi.com/2079-3197/4/1/13/xml |
