I want to know the answer to the following question:
What is another work of Avicenna that is said to not be his creation?
All the background I'm provided with is that "The epistola de Re recta is somewhat less sceptical of alchemy; Anawati argues that it is by Avicenna, but written earlier in his career when he had not yet firmly decided that transmutation was impossible.". Is that enough to answer the question?