notes = "This response refers to the articles available at the
following DOIs: 10.1007/s10710-013-9196-7;
10.1007/s10710-013-9198-5; 10.1007/s10710-013-9199-4;
10.1007/s10710-013-9200-2; 10.1007/s10710-013-9201-1;
10.1007/s10710-013-9202-0; 10.1007/s10710-013-9203-z;
10.1007/s10710-013-9204-y.