List of Articles CoAl2O4 spinel nanocrystals Open Access Article Abstract Page Full-Text 1 - A favourable ultrasound-assisted method for the combinatorial synthesis of 2,3-dihydroquinazolin-4(1H)-ones via CoAl2O4 spinel nanocrystal as an efficient catalyst Javad Safaei-Ghomi Rahele Teymuri