Is this paper of any help?:

Anderson, R. C., Guerreiro, M., & Smith, J. (2016). Are all biases bad? Collaborative grounded theory in developmental evaluation of education policy. Journal of Multidisciplinary Evaluation, 12(27), 44-57.

Article Are All Biases Bad? Collaborative Grounded Theory in Develop...

Three of the authors, Dr Ross Crosby Anderson, Dr Meg Guerriero and Joanna Smith are on ResearchGate if you wanted to explore this with them.

These papers might also be relevant:

Deady, R. (2011). Reading with methodological perspective bias: A journey into classic grounded theory. The Grounded Theory Review, 10(1), 41-57.

http://groundedtheoryreview.com/2011/04/11/reading-with-methodological-perspective-bias-a-journey-into-classic-grounded-theory-2/

Kolb, S. M. (2012). Grounded theory and the constant comparative method: Valid research strategies for educators. Journal of Emerging Trends in Educational Research and Policy Studies, 3(1), 83-86.

Article Grounded theory and the constant comparative method: Valid r...

I think this paper have some relevancy, but I haven't seen the full text:

Tan, J. (2010). Grounded theory in practice: issues and discussion for new qualitative researchers. Journal of Documentation, 66(1), 93-112.

Article Grounded theory in practice: Issues and discussion for new q...

Very best wishes with your PhD,

Mary

Thanks, Mary!

Allesandro - let me know if you have any questions about that work. I think it may help answer your question.

Dear Mary, dear Ross,

Thank you very much for your reply.

Mary, I will read through your suggested literature over the week end and then, hopefully, get back to you with a more thoughtful reply.

Ross, I will do, and thank you very much for your help.