For those seeking scientific postgraduate papers, particularly in physics, recommended resources include arXiv.org and the Harvard ADS (Astrophysics Data System). While arXiv offers a wide range of articles, users should be cautious as it includes unconventional papers; thus, it's advisable to focus on peer-reviewed journals for research projects. Additionally, accessing dissertations through UMI is suggested. Engaging with research groups at universities can also provide valuable guidance and introductory reading recommendations in specific areas of interest.