All my students ask me about this topic in some moment. I’m talking about the number of necessary cases when you are going to make a research using qualitative case study design. I’m thinking seriously to write an article about it because nobody has an answer, apparently. Of course, if you are thinking about criteria suggested by Grounded Theory I’m agree with you, but sometimes students just can work considering only two or three cases (there isn’t such a restriction in Grounded Theory). So, do you know about serious suggestions about the number of cases we need include in our research to produce a “credible” result using case study? If you know papers referring this theme, please let me know.