Shafran used a lot of wrist action and very fast, short bows. The concerto demands a martelé stroke at the tip and a col legno (bouncing wood) in the third movement. You will need a bow that bites, not one that slides.
So, open your browser. Go to IMSLP. Search for . Print the part. Sit down with your instrument. And discover one of the 20th century's most unfairly neglected masterpieces. imslp kabalevsky cello concerto