| article html file updated | 8 February 2020 16:06 CET | Update | https://www.mdpi.com/2076-3921/6/3/69 |
| article html file updated | 27 September 2019 03:00 CEST | Update | N/A |
| article html file updated | 3 May 2019 02:08 CEST | Update | N/A |
| article html file updated | 30 September 2017 11:19 CEST | Update | N/A |
| article html file updated | 18 September 2017 09:54 CEST | Update | N/A |
| article xml uploaded. | 18 September 2017 09:53 CEST | Update | https://www.mdpi.com/2076-3921/6/3/69/xml |
| article pdf uploaded. | 18 September 2017 09:53 CEST | Updated version of record | https://www.mdpi.com/2076-3921/6/3/69/pdf |
| article html file updated | 13 September 2017 14:17 CEST | Original file | N/A |
| article xml uploaded. | 13 September 2017 14:16 CEST | Original file | N/A |
| article pdf uploaded. | 13 September 2017 14:16 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/69/pdf-vor |
