It has been brought to our attention that some of the line references listed in the above article are incorrect. The correct line references are listed below.

p. 8, footnote 11, first line: “ligne 4” should read “(ligne 5)”, according to the lines of example (1).

p. 12, first line of text below example (6): “(ligne 4)” should read “(lignes 4–5)”.

p. 14, two lines below example (8): “à la ligne 5” should read “lignes 5–6”, so as to correspond to the text of the example as printed above example (8).

p.14, four lines below example (9): “lignes 3–4” should read “lignes 4–5”.

p. 15, in the second complete paragraph, line 2: “(ligne 4)” should read “(lignes 5–6)”.

p. 16, first line below end of example (10): “(ligne 3)” should read (“ligne 4)”.