Literature/blog on creating pictograms?

Question

Icons

There is already some experience in creating pictograms - from defining a metaphor to drawing in a certain style. But I would like to learn from the experience of more advanced comrades. Is there anything to read on this topic (Russian / English)? At one time I was looking for literature, but I found only
www.fivesimplesteps.com/products/the-icon-handbook
I'm going to order.