| article html file updated | 12 February 2020 04:44 CET | Update | https://www.mdpi.com/2076-0752/8/2/52 |
| article html file updated | 4 July 2019 16:26 CEST | Update | N/A |
| article html file updated | 25 April 2019 13:11 CEST | Update | N/A |
| article html file updated | 12 April 2019 05:06 CEST | Original file | N/A |
| article pdf uploaded. | 12 April 2019 05:04 CEST | Updated version of record | https://www.mdpi.com/2076-0752/8/2/52/pdf |
| article xml uploaded. | 12 April 2019 05:04 CEST | Update | https://www.mdpi.com/2076-0752/8/2/52/xml |
| article xml file uploaded | 12 April 2019 05:04 CEST | Update | N/A |
| article pdf uploaded. | 11 April 2019 16:00 CEST | Version of Record | https://www.mdpi.com/2076-0752/8/2/52/pdf-vor |
| article xml file uploaded | 11 April 2019 16:00 CEST | Original file | N/A |
