Complex sentence: Yet after the threshold level, the diversification decreases the percentage of failures: the authors say the following with respect to diversification: "it gets worse before it gets better" Elliott, M., Golub, B. and Jackson 2013.
Split into simpler sentences: Yet after the threshold level, the diversification decreases the percentage of failures: the authors say the following with respect to diversification: "it gets worse before it gets better". The authors Elliott, M., Golub, B. and Jackson 2013.