Ik heb inmiddels antwoord gekregen van de schrijver van het blog:
At the moment it is only on my blog. Funny, as you ask. I'm in the process of getting them published at the next International Congress of Vexillology, which is to be held in London this summer. So very soon, they will have official professional recognition by the flag people. And I will be making some modifications. Thanks for the interest. I know after publication, they will send out copies of my work with the ISBN numbers. But that can take time, sometimes months. At the very latest, it may be a year before all the editing is done, but recognition will come this summer at ICV 27. Thanks for you interest,
Nog even geduld dus....