Write a review Your name* Your e-mail* (Not for publication) Rating ★★★★★ Excellent ★★★★☆ Very good ★★★☆☆ Average ★★☆☆☆ Poor ★☆☆☆☆ Terrible Your review * * — Required information The Numerical Algorithms Group Ltd (NAG) ← View details Wilkinson House, Jordan Hill Business Park, Oxford OX2 8DR, United Kingdom, Oxford, England