1-s2.0-S0378874112006502-main.pdf
1-s2.0-S037887411200743X-main.pdf
1-s2.0-S0378874112008215-main.pdf
1-s2.0-0389430494902062-main.pdf
1-s2.0-0039914069802407-main.pdf
1-s2.0-S016816560500430X-main.pdf
1-s2.0-038943049500008U-main.pdf
1-s2.0-S034403388080166X-main.pdf
1-s2.0-S0389430402001984-main.pdf
1-s2.0-0008884673900963-main.pdf
1-s2.0-S0389430401001564-main.pdf
1-s2.0-038943049500064X-main.pdf