additional contributions by Laura Braverman ... [et al. additional contributions by Samuel Adams...[et al. with additional contributions by Yuri Avvakumov ... [et al. with additional contributions by Hank Glassman...[et al. contributions by Barry Friedman ... [et al. with contributions by Avis Berman ...[et al. with contributions by Paul Dujardin ... [et al. with contributions by Samantha Friedman ... [et al. with contributions by Silke Ackermann ... [et al. with additional contributions by Timothy Verdon...[et al.