Authors: M Itkin; U Heinig; O Tzfadia; A J Bhide; B Shinde; P D Cardenas; S E Bocobza; T Unger; S Malitsky; R Finkers; Y Tikunov; A Bovy; Y Chikate; P Singh; I Rogachev; J Beekwilder; A P Giri; A Aharoni Journal: Science Date: 2013-06-20 Impact factor: 47.728