| article html file updated | 8 February 2020 06:32 CET | Update | https://www.mdpi.com/2076-3921/6/2/38 |
| article html file updated | 24 September 2019 23:28 CEST | Update | N/A |
| article html file updated | 3 May 2019 20:44 CEST | Update | N/A |
| article html file updated | 28 June 2017 12:30 CEST | Update | N/A |
| article html file updated | 31 May 2017 10:50 CEST | Update | N/A |
| article xml uploaded. | 31 May 2017 10:46 CEST | Update | https://www.mdpi.com/2076-3921/6/2/38/xml |
| article pdf uploaded. | 31 May 2017 10:46 CEST | Updated version of record | https://www.mdpi.com/2076-3921/6/2/38/pdf |
| article html file updated | 23 May 2017 16:21 CEST | Original file | N/A |
| article pdf uploaded. | 23 May 2017 16:20 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/2/38/pdf-vor |
