| article html file updated | 7 February 2020 21:51 CET | Update | https://www.mdpi.com/2075-4701/7/1/30 |
| article html file updated | 22 September 2019 23:29 CEST | Update | N/A |
| article html file updated | 4 May 2019 14:21 CEST | Update | N/A |
| article html file updated | 7 February 2017 09:41 CET | Update | N/A |
| article html file updated | 20 January 2017 10:30 CET | Original file | N/A |
| article xml uploaded. | 20 January 2017 10:28 CET | Update | https://www.mdpi.com/2075-4701/7/1/30/xml |
| article xml uploaded. | 20 January 2017 10:28 CET | Original file | N/A |
| article pdf uploaded. | 20 January 2017 10:28 CET | Version of Record | https://www.mdpi.com/2075-4701/7/1/30/pdf |
