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Continue to ChatB-Darboux Frame of a Surface - https://avesis.ogu.edu.tr/publication/details/bf0c9d28-97a0-45f8-9716-3d6203bca339/b-darboux-frame-of-a-surface
B-Darboux Frame of a Surface - https://avesis.ogu.edu.tr/publication/details/bf0c9d28-97a0-45f8-9716-3d6203bca339/b-darboux-frame-of-a-surface