| article html file updated | 8 February 2020 01:13 CET | Update | https://www.mdpi.com/2304-6732/4/1/18 |
| article html file updated | 23 September 2019 18:22 CEST | Update | - |
| article html file updated | 4 May 2019 07:16 CEST | Update | - |
| article html file updated | 29 March 2017 08:53 CEST | Update | - |
| article html file updated | 10 March 2017 14:37 CET | Original file | - |
| article xml uploaded. | 10 March 2017 14:36 CET | Original file | https://www.mdpi.com/2304-6732/4/1/18/xml |
| article pdf uploaded. | 10 March 2017 14:36 CET | Version of Record | https://www.mdpi.com/2304-6732/4/1/18/pdf |
