| article html file updated | 9 February 2020 01:22 CET | Update | https://www.mdpi.com/2220-9964/7/1/6 |
| article html file updated | 29 September 2019 12:38 CEST | Update | N/A |
| article html file updated | 2 May 2019 05:47 CEST | Update | N/A |
| article html file updated | 18 April 2019 03:47 CEST | Update | N/A |
| article html file updated | 28 March 2019 11:34 CET | Update | N/A |
| article html file updated | 1 February 2018 09:51 CET | Update | N/A |
| article html file updated | 27 December 2017 17:28 CET | Original file | N/A |
| article xml uploaded. | 27 December 2017 17:27 CET | Update | https://www.mdpi.com/2220-9964/7/1/6/xml |
| article xml uploaded. | 27 December 2017 17:27 CET | Original file | N/A |
| article pdf uploaded. | 27 December 2017 17:27 CET | Version of Record | https://www.mdpi.com/2220-9964/7/1/6/pdf |
