| article html file updated | 8 February 2020 03:57 CET | Update | https://www.mdpi.com/2311-553X/3/2/20 |
| article html file updated | 24 September 2019 09:59 CEST | Update | - |
| article html file updated | 4 May 2019 01:31 CEST | Update | - |
| article html file updated | 29 June 2017 11:40 CEST | Update | - |
| article html file updated | 19 April 2017 16:18 CEST | Update | - |
| article xml uploaded. | 19 April 2017 16:17 CEST | Update | https://www.mdpi.com/2311-553X/3/2/20/xml |
| article pdf uploaded. | 19 April 2017 16:17 CEST | Updated version of record | https://www.mdpi.com/2311-553X/3/2/20/pdf |
| article html file updated | 19 April 2017 16:09 CEST | Original file | - |
