| article html file updated | 10 February 2020 18:00 CET | Update | https://www.mdpi.com/2223-7747/7/4/91 |
| article html file updated | 28 April 2019 15:43 CEST | Update | N/A |
| article html file updated | 14 April 2019 10:50 CEST | Update | N/A |
| article html file updated | 1 April 2019 12:08 CEST | Update | N/A |
| article html file updated | 26 December 2018 23:29 CET | Update | N/A |
| article pdf uploaded. | 26 October 2018 04:55 CEST | Version of Record | https://www.mdpi.com/2223-7747/7/4/91/pdf |
| article xml uploaded. | 26 October 2018 04:55 CEST | Update | https://www.mdpi.com/2223-7747/7/4/91/xml |
| article xml file uploaded | 26 October 2018 04:55 CEST | Original file | N/A |
| article html file updated | 26 October 2018 04:54 CEST | Original file | N/A |
