| article html file updated | 8 February 2020 03:59 CET | Update | https://www.mdpi.com/1999-4907/8/4/129 |
| article html file updated | 24 September 2019 10:10 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:27 CEST | Update | N/A |
| article html file updated | 28 April 2017 06:44 CEST | Update | N/A |
| article html file updated | 24 April 2017 10:56 CEST | Original file | N/A |
| article xml uploaded. | 24 April 2017 10:55 CEST | Original file | https://www.mdpi.com/1999-4907/8/4/129/xml |
| article pdf uploaded. | 24 April 2017 10:55 CEST | Updated version of record | https://www.mdpi.com/1999-4907/8/4/129/pdf |
| article pdf uploaded. | 20 April 2017 12:47 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/4/129/pdf-vor |
