| article html file updated | 9 February 2020 00:18 CET | Update | https://www.mdpi.com/2076-3921/6/4/103 |
| article html file updated | 29 September 2019 06:31 CEST | Update | N/A |
| article html file updated | 2 May 2019 08:06 CEST | Update | N/A |
| article html file updated | 18 April 2019 05:54 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:30 CET | Update | N/A |
| article html file updated | 16 December 2017 11:55 CET | Original file | N/A |
| article xml uploaded. | 16 December 2017 11:54 CET | Update | https://www.mdpi.com/2076-3921/6/4/103/xml |
| article xml uploaded. | 16 December 2017 11:54 CET | Original file | N/A |
| article pdf uploaded. | 16 December 2017 11:54 CET | Version of Record | https://www.mdpi.com/2076-3921/6/4/103/pdf |
