| article html file updated | 27 March 2020 05:06 CET | Original file | https://www.mdpi.com/2076-0752/9/1/21 |
| article pdf uploaded. | 27 March 2020 05:05 CET | Updated version of record | https://www.mdpi.com/2076-0752/9/1/21/pdf |
| article xml uploaded. | 27 March 2020 05:05 CET | Update | https://www.mdpi.com/2076-0752/9/1/21/xml |
| article xml file uploaded | 27 March 2020 05:05 CET | Update | - |
| article pdf uploaded. | 12 February 2020 13:28 CET | Updated version of record | https://www.mdpi.com/2076-0752/9/1/21/pdf-vor |
| article pdf uploaded. | 12 February 2020 13:16 CET | Version of Record | https://www.mdpi.com/2076-0752/9/1/21/pdf-vor |
| article xml file uploaded | 12 February 2020 13:16 CET | Original file | - |
