Narrow question: Did Publ. Math. Institute Hung. (Publications of the Mathematical Institute of the Hungarian Academy of Sciences) change its name? I am finalizing the bibliography of an article in progress that refers to an article that supposedly appeared in Publ. Math. Institute Hung. (see e.g. [this MathSE question](https://math.stackexchange.com/questions/3535217/in-how-many-ways-can-a-permutation-cycle-be-decomposed-as-a-product-of-transposi)), but my go-to webpage for official journal abbreviations, <https://mathscinet.ams.org/msnhtml/serials.pdf>, appears to list no such journal. Perhaps it's now Acta Math. Hungar. or Period. Math. Hungar. or Studia Sci. Math. Hungar.?


Broader question: What is the best resource for investigating such questions? When a journal changes its name, how is a working mathematician to know?



Does Publ. Math. Institute Hung. have a new name?
According to Mathscinet, the name of this journal was
A Magyar Tudományos Akadémia. Matematikai Kutató Intézetének Közleményei.


Abbreviation: Magyar Tud. Akad. Mat. Kutató Int. Közl.


It changed the name in 1977 and now is called Alkalmazott Matematikai Lapok.
But the paper you refer to is listed under the old name.


