The notices, confirmation, consent, agreement, declaration and other communications referred to in articles 19, paragraph 2; 23, paragraphs 1 to 4; 36, subparagraphs 1 (b), (c) and (d); 40, subparagraph 4 (b); 44; 48, paragraph 3; 51, subparagraph 1 (b); 59, paragraph 1; 63; 66; 67, paragraph 2; 75, paragraph 4; and 80, paragraphs 2 and 5, shall be in writing. Electronic communications may be used for these purposes, provided that the use of such means is with the consent of the person by which it is communicated and of the person to which it is communicated.