| article html file updated | 9 February 2020 14:34 CET | Update | https://www.mdpi.com/2227-9067/5/4/53 |
| article html file updated | 1 May 2019 02:01 CEST | Update | N/A |
| article html file updated | 17 April 2019 02:34 CEST | Update | N/A |
| article html file updated | 29 March 2019 17:25 CET | Update | N/A |
| article html file updated | 1 May 2018 05:24 CEST | Update | N/A |
| article html file updated | 20 April 2018 12:05 CEST | Update | N/A |
| article html file updated | 20 April 2018 12:05 CEST | Original file | N/A |
| article pdf uploaded. | 20 April 2018 12:03 CEST | Updated version of record | https://www.mdpi.com/2227-9067/5/4/53/pdf |
| article xml file uploaded | 20 April 2018 12:03 CEST | Update | https://www.mdpi.com/2227-9067/5/4/53/xml |
| article pdf uploaded. | 20 April 2018 12:03 CEST | Updated version of record | N/A |
| article xml file uploaded | 20 April 2018 12:03 CEST | Original file | N/A |
