Trying to complete Vimm's Lair PSP collection, how can I identify versions of PSP games?

I want to help Vimm's Lair complete their preservation of all PSP games, and they're only missing 7 Japanese games. Since I live in Japan, I wanted to try and find them to complete the collections. The missing games are:
Boxer's Road 2 - The Real (Japan) (v2.00)
Ore no Shikabane o Koete Yuke (Japan) (v2.00)
Sengoku Hime - Senran ni Mau Otometachi (Japan) (v2.01)
Sengoku Tenka Touitsu (Japan) (v2.00)
Sto-Mani - Strobe-Mania (Japan)
Summon Night 4 (Japan) (v3.00)
Tekken 6 (Asia) (En,Ja,Fr,De,Es,It,Ko,Ru)

Most of them are specific version of games, so my question is Would I need to hunt for specifc versions of the UMD's, and is there any way to tell the version of a game without putting it in my PSP to check? This would make buying them online a lot easier if there was a way to tell just from looking at i