https://archive.org/details/ERIC_ED250164 — AMS 55, tenth printing with corrections (1972). This is NBS/NIST's venerable "Handbook of Mathematical Functions", all thousand-odd pages of it.
Romanian (the language) is heavily influenced by Latin and is written with a Latin alphabet. That means a good chance of you being able to work out the various projects (electronic and non-).
https://www.fanfiction.net/s/3296251/1/Ruroni-Ranko by Skysaber. https://www.fanfiction.net/s/2791056/1/Rurouni-Ranma by DarkFyre99. Both are of similar vintage. Both are stalled at eleven chapters. Both involve at least Ranma, SM and something of Rurouni Kenshin. The latter is loonier, though, wit...