Numerous resources are available online for stress-strain calculations, particularly through a simple Google search for "stress-strain curve." Many users recommend looking for educational websites that focus on engineering or materials science for relevant formulas, graphs, and diagrams. Specific inquiries about basic formulas suitable for university studies are encouraged, as there are many advanced formulas that may not be applicable. It's important to focus on resources that align with academic requirements. Accessing the right materials can significantly aid in understanding stress-strain relationships in engineering contexts.