| article html file updated | 13 February 2020 22:12 CET | Update | https://www.mdpi.com/2076-393X/7/4/138 |
| article html file updated | 30 December 2019 16:41 CET | Update | N/A |
| article html file updated | 22 October 2019 09:08 CEST | Original file | N/A |
| article pdf uploaded. | 22 October 2019 09:07 CEST | Updated version of record | https://www.mdpi.com/2076-393X/7/4/138/pdf |
| article xml uploaded. | 22 October 2019 09:07 CEST | Update | https://www.mdpi.com/2076-393X/7/4/138/xml |
| article xml file uploaded | 22 October 2019 09:07 CEST | Update | N/A |
| article pdf uploaded. | 2 October 2019 15:42 CEST | Version of Record | https://www.mdpi.com/2076-393X/7/4/138/pdf-vor |
| article xml file uploaded | 2 October 2019 15:42 CEST | Original file | N/A |
