| article html file updated | 8 February 2020 01:43 CET | Update | https://www.mdpi.com/2076-3425/7/3/31 |
| article html file updated | 23 September 2019 21:14 CEST | Update | - |
| article html file updated | 4 May 2019 06:09 CEST | Update | - |
| article html file updated | 27 March 2017 10:34 CEST | Update | - |
| article html file updated | 17 March 2017 14:32 CET | Original file | - |
| article xml uploaded. | 17 March 2017 14:30 CET | Original file | https://www.mdpi.com/2076-3425/7/3/31/xml |
| article pdf uploaded. | 17 March 2017 14:30 CET | Version of Record | https://www.mdpi.com/2076-3425/7/3/31/pdf |
