Ilya, thanks for the photos. They are very useful. I made my way through the French and looks like it's not recommended for containers. I wish they had given the percentage in the mix of each ingredient (bark, vegetable compost, vegetable matter and fiber). For my potting mix I'm using aprox 1/3rd groundcover bark, 1/3rd peat moss, 1/3rd compost, but I often kick up the percentage of bark. Since my bark isn't composted, the mix isn't as fine as the one in the photo.
This looks much better than just adding peat moss to the soil. I think I'll try a variation of my mix with a citrus tree and see how it works. I wonder how much I should add in a 3'x3' hole, 24" deep.