Contrasting mechanical evolution of bakken shale under hydrous and anhydrous pyrolysis: A nanoindentation-based assessment - Mengdi Sun; Jiajun Fu; Yeping Ji; Yiquan Ma; Bo Liu; Qiuli Huo; Aydin Larestani; Abdolhossein Hemmati-Sarapardeh; Mehdi Ostadhassan (International Journal of Rock Mechanics and Mining Sciences, 2026)