| article html file updated | 8 February 2020 11:14 CET | Update | https://www.mdpi.com/2076-0760/6/3/77 |
| article html file updated | 3 May 2019 11:55 CEST | Update | N/A |
| article html file updated | 27 March 2019 16:13 CET | Update | N/A |
| article pdf uploaded. | 26 July 2017 11:02 CEST | Updated version of record | https://www.mdpi.com/2076-0760/6/3/77/pdf |
| article html file updated | 17 July 2017 14:50 CEST | Update | N/A |
| article html file updated | 17 July 2017 14:48 CEST | Update | N/A |
| article html file updated | 17 July 2017 14:48 CEST | Original file | N/A |
| article xml uploaded. | 17 July 2017 14:46 CEST | Original file | https://www.mdpi.com/2076-0760/6/3/77/xml |
| article pdf uploaded. | 17 July 2017 14:46 CEST | Version of Record | https://www.mdpi.com/2076-0760/6/3/77/pdf-vor |
