A link is not possible, its in a magazine I bought. But I'll post the relevant details.
I tried attaching the charts A and B (not too sure whether it worked. I've read about problem uploading files).
The gauge swatch says:
29 m et 41 rgs en losanges et ray., avec les aig n°3 = env 10 x 10 cm.
(29 stitches and 41 rows in pattern B and A on 3 mm needles about 4x4 inch)
(Upload didn't work. Anyway, there are the files)
How do they come up 21 stitches ?