File:Helena Třeštíková signature.jpg
![File:Helena Třeštíková signature.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Helena_T%C5%99e%C5%A1t%C3%ADkov%C3%A1_signature.jpg/800px-Helena_T%C5%99e%C5%A1t%C3%ADkov%C3%A1_signature.jpg?20240325224429)
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