| article html file updated | 7 February 2020 06:11 CET | Update | https://www.mdpi.com/2079-6412/6/1/13 |
| article html file updated | 5 May 2019 20:51 CEST | Update | - |
| article html file updated | 26 March 2019 23:58 CET | Update | - |
| article html file updated | 18 May 2016 12:49 CEST | Original file | - |
| article xml uploaded. | 22 March 2016 09:03 CET | Original file | https://www.mdpi.com/2079-6412/6/1/13/xml |
| article pdf uploaded. | 22 March 2016 09:03 CET | Version of Record | https://www.mdpi.com/2079-6412/6/1/13/pdf |
