Groups of Order 2048 with Three Generators and Three Relations
  It is shown that there are exactly seventy-eight 3-generator 2- groups of order 2^11 with trivial Schur multiplier. We then give 3-generator, 3-relation presentations for forty-eight of them proving that these groups have deficiency zero. 
Shirin Fouladi and Reza Orfi
math.GR