| article html file updated | 7 February 2020 19:55 CET | Update | https://www.mdpi.com/2075-4701/6/12/321 |
| article html file updated | 22 September 2019 13:06 CEST | Update | N/A |
| article html file updated | 4 May 2019 18:36 CEST | Update | N/A |
| article html file updated | 28 December 2016 11:25 CET | Update | N/A |
| article html file updated | 19 December 2016 12:36 CET | Original file | N/A |
| article xml uploaded. | 19 December 2016 12:34 CET | Update | https://www.mdpi.com/2075-4701/6/12/321/xml |
| article xml uploaded. | 19 December 2016 12:34 CET | Original file | N/A |
| article pdf uploaded. | 19 December 2016 12:34 CET | Version of Record | https://www.mdpi.com/2075-4701/6/12/321/pdf |
