Can you call it open-source if it has no explicit license and the README contains this?<p>PST function is developed in Jalali Lab at University of California, Los Angeles (UCLA). PST is a spin-off from research on the photonic time stretch technique in Jalali lab at UCLA. More information about the technique can be found in our group website: <a href="http:&#x2F;&#x2F;www.photonics.ucla.edu" rel="nofollow">http:&#x2F;&#x2F;www.photonics.ucla.edu</a> This function is provided for research purposes only. A license must be obtained from the University of California, Los Angeles for any commercial applications. The software is protected under a US patent.