Dr. Bittar, welcome to the group. I'm looking forward to learn from
you soon.
1. So far, there is no English translation of the Niddesa, and I'm
not sure if it is translated in French or German. However, there is a
Japanese translation, and a Chinese translation is underway in Taiwan.
The books from Khuddaka Nikaaya and available in English translation
(s) are:
(1) Khuddakapaa.tha
(2) Dhammapada
(3) Udaana
(4) Itivuttaka
(5) Sutta-Nipaata
(6) Vimaanavatthu
(7) Petavatthu
(8) Theragaathaa
(9) Theriigaathaa
(10) Jaataka
(12) Pa.tisambhidaamagga
(14) Buddhava.msa
(15) Cariyaapi.taka
No known/published English translation:
(11) Niddesa
(13) Apadaana
[An Analysis of the Pali Canon, Russell Webb, Wheel Publication
217/220]
2. If I did not remember wrongly, the study of Dasa.ngika Magga had
been done by Japanese or Taiwanese scholars. I will keep in mind and
update the group when I come across any such references. On the other
hand, it should be noted that A.t.tha.ngika Magga is used as the
framework for the Middle Path across all buddhist schools.