| article html file updated | 7 February 2020 20:13 CET | Update | https://www.mdpi.com/2076-3417/7/1/12 |
| article html file updated | 22 September 2019 14:40 CEST | Update | N/A |
| article html file updated | 4 May 2019 18:00 CEST | Update | N/A |
| article html file updated | 8 February 2017 08:47 CET | Update | N/A |
| article html file updated | 24 December 2016 10:24 CET | Original file | N/A |
| article xml uploaded. | 24 December 2016 10:22 CET | Original file | https://www.mdpi.com/2076-3417/7/1/12/xml |
| article pdf uploaded. | 24 December 2016 10:22 CET | Version of Record | https://www.mdpi.com/2076-3417/7/1/12/pdf |
