| article html file updated | 8 February 2020 03:37 CET | Update | https://www.mdpi.com/2075-4701/7/4/140 |
| article html file updated | 24 September 2019 07:56 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:09 CEST | Update | N/A |
| article html file updated | 28 April 2017 07:00 CEST | Update | N/A |
| article html file updated | 18 April 2017 03:18 CEST | Original file | N/A |
| article xml uploaded. | 18 April 2017 03:16 CEST | Update | https://www.mdpi.com/2075-4701/7/4/140/xml |
| article pdf uploaded. | 18 April 2017 03:16 CEST | Updated version of record | https://www.mdpi.com/2075-4701/7/4/140/pdf |
| article pdf uploaded. | 14 April 2017 13:14 CEST | Version of Record | https://www.mdpi.com/2075-4701/7/4/140/pdf-vor |
