на сайте журнала Applied Categorical Structures:
https://link.springer.com/journal/10485/onlineFirst/page/1
https://link.springer.com/article/10.1007/s10485-018-9534-2
https://doi.org/10.1007/s10485-018-9534-2
https://rdcu.be/2LFq
https://link.springer.com/journal/10485/onlineFirst/page/1
https://link.springer.com/article/10.1007/s10485-018-9534-2
https://doi.org/10.1007/s10485-018-9534-2
https://rdcu.be/2LFq