| article html file updated | 8 February 2020 18:47 CET | Update | https://www.mdpi.com/2311-5629/3/4/31 |
| article html file updated | 27 September 2019 20:27 CEST | Update | N/A |
| article html file updated | 2 May 2019 20:30 CEST | Update | N/A |
| article html file updated | 19 October 2017 09:03 CEST | Original file | N/A |
| article xml uploaded. | 19 October 2017 09:02 CEST | Update | https://www.mdpi.com/2311-5629/3/4/31/xml |
| article xml uploaded. | 19 October 2017 09:02 CEST | Original file | N/A |
| article pdf uploaded. | 19 October 2017 09:02 CEST | Updated version of record | https://www.mdpi.com/2311-5629/3/4/31/pdf |
| article pdf uploaded. | 18 October 2017 12:21 CEST | Version of Record | https://www.mdpi.com/2311-5629/3/4/31/pdf-vor |
