Similar pattern
This pattern is from the second edition of the book “Strik a la Carte I” (published 2011). It is a pattern with a rounded neckline in front, and a v-neck at the back. See photo at Isager website.

A similar pattern with double v-neck was published in the first edition of “Strik a la Carte” (published 2009). It was also published in “Classic Knits”. The 2009 pattern has two identical deep v-necks back and front and some problems in construction that have been revised for the 2011 pattern.