| article html file updated | 12 February 2020 07:19 CET | Update | https://www.mdpi.com/2304-6775/7/2/28 |
| article html file updated | 5 July 2019 18:21 CEST | Update | N/A |
| article html file updated | 8 May 2019 14:48 CEST | Original file | N/A |
| article pdf uploaded. | 8 May 2019 12:34 CEST | Updated version of record | https://www.mdpi.com/2304-6775/7/2/28/pdf |
| article xml uploaded. | 8 May 2019 12:34 CEST | Update | https://www.mdpi.com/2304-6775/7/2/28/xml |
| article xml file uploaded | 8 May 2019 12:34 CEST | Update | N/A |
| article pdf uploaded. | 24 April 2019 04:42 CEST | Version of Record | https://www.mdpi.com/2304-6775/7/2/28/pdf-vor |
| article xml file uploaded | 24 April 2019 04:42 CEST | Original file | N/A |
