| article html file updated | 8 February 2020 13:04 CET | Update | https://www.mdpi.com/2306-5354/4/3/68 |
| article html file updated | 26 September 2019 10:23 CEST | Update | - |
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| article html file updated | 30 September 2017 07:39 CEST | Update | - |
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| article xml uploaded. | 17 August 2017 10:53 CEST | Update | https://www.mdpi.com/2306-5354/4/3/68/xml |
| article pdf uploaded. | 17 August 2017 10:53 CEST | Updated version of record | https://www.mdpi.com/2306-5354/4/3/68/pdf |
| article html file updated | 8 August 2017 11:37 CEST | Original file | - |
| article pdf uploaded. | 8 August 2017 11:36 CEST | Version of Record | https://www.mdpi.com/2306-5354/4/3/68/pdf-vor |
