Professor Hehua Zhu, Tongji University, Kina, održat će 15.7.2025. 50-to ISRM Online Lecture s naslovom “Generalized Zhang-Zhu (GZZ) Three-Dimensional Rock Strength Theory and Application to Real-Time Stress-Control Analysis in Deep Tunneling”. Predavanje će se moći vidjeti i naknadno na stranicama ISRM Online Lectures.