According to the following people,  (Little et al. 2012a)  (Little et
al. 2012b)  (Little et al. 2012c) Little et al. (2012a) Little et
al. (2012b) Little et al. (2012c)  (Little et al. 2012a,b)  (Little et
al. 2012b,a) Little et al. (2012a,b) Little et al. (2012b,a)

Bibliography

Little, Bo, and Peep. Diss 1. PhD dissertation, NEU, 2012a.       
Little, Bo, and Peep. Diss 2. PhD dissertation, NEU, 2012b.       
Little, Bo, Peep, and Peep2. Diss 3. PhD dissertation, NEU, 2012c.
