| article html file updated | 9 February 2020 02:31 CET | Update | https://www.mdpi.com/2218-1997/4/1/16 |
| article html file updated | 2 May 2019 03:22 CEST | Update | N/A |
| article html file updated | 18 April 2019 01:31 CEST | Update | N/A |
| article html file updated | 28 March 2019 14:18 CET | Update | N/A |
| article html file updated | 1 February 2018 11:52 CET | Update | N/A |
| article pdf uploaded. | 10 January 2018 11:21 CET | Updated version of record | https://www.mdpi.com/2218-1997/4/1/16/pdf |
| article html file updated | 10 January 2018 07:24 CET | Original file | N/A |
| article xml uploaded. | 10 January 2018 07:22 CET | Original file | https://www.mdpi.com/2218-1997/4/1/16/xml |
| article pdf uploaded. | 10 January 2018 07:22 CET | Version of Record | N/A |
