| article html file updated | 8 February 2020 01:05 CET | Update | https://www.mdpi.com/2076-2615/7/3/20 |
| article html file updated | 23 September 2019 17:41 CEST | Update | - |
| article html file updated | 4 May 2019 07:32 CEST | Update | - |
| article html file updated | 27 March 2017 09:38 CEST | Update | - |
| article html file updated | 9 March 2017 10:16 CET | Original file | - |
| article xml uploaded. | 9 March 2017 10:15 CET | Original file | https://www.mdpi.com/2076-2615/7/3/20/xml |
| article pdf uploaded. | 9 March 2017 10:15 CET | Version of Record | https://www.mdpi.com/2076-2615/7/3/20/pdf |
