| article html file updated | 9 February 2020 06:03 CET | Update | https://www.mdpi.com/2075-4701/8/2/121 |
| article html file updated | 30 September 2019 15:52 CEST | Update | - |
| article html file updated | 1 May 2019 19:46 CEST | Update | - |
| article html file updated | 17 April 2019 18:53 CEST | Update | - |
| article html file updated | 28 March 2019 22:05 CET | Update | - |
| article html file updated | 9 February 2018 09:49 CET | Original file | - |
| article xml uploaded. | 9 February 2018 09:47 CET | Original file | https://www.mdpi.com/2075-4701/8/2/121/xml |
| article pdf uploaded. | 9 February 2018 09:47 CET | Version of Record | https://www.mdpi.com/2075-4701/8/2/121/pdf |
