Key points are not available for this paper at this time.
Noorduyn J., Teeuw A. A Panorama of the World from Sundanese Perspective. In: Archipel, volume 57, 1999. L'horizon nousantarien. Mélanges en hommage à Denys Lombard (Volume II) pp. 209-221.
Noorduyn et al. (Fri,) studied this question.