I'm sorry, but I couldn't find any information on an author named רב יצחק זילברשטיין. It's possible that the name may be misspelled or not widely recognized. If you have any additional details or context about this author, please provide them so I can assist you more effectively. Alternatively, if you have a different author in mind or a different topic you'd like to learn about, feel free to let me know, and I'd be happy to help.
