| article html file updated | 7 February 2020 03:26 CET | Update | https://www.mdpi.com/2075-4663/4/1/3 |
| article html file updated | 21 September 2019 09:40 CEST | Update | N/A |
| article html file updated | 6 May 2019 02:34 CEST | Update | N/A |
| article html file updated | 26 March 2019 18:28 CET | Update | N/A |
| article html file updated | 29 March 2016 11:10 CEST | Original file | N/A |
| article pdf uploaded. | 15 January 2016 13:02 CET | Version of Record | https://www.mdpi.com/2075-4663/4/1/3/pdf |
| article xml uploaded. | 15 January 2016 13:02 CET | Original file | https://www.mdpi.com/2075-4663/4/1/3/xml |
