13=1,5; 14=2,5; 15=3,3; 16=3,11; 17=3,10; 18=4,5; 19=5,6; 20=6,6/7; 21=7,7/8; 22=8,8/9; 23=9,6/7; 24=11,1/2; 25=11,4; 26=12,8/9; 27=16,8/9; 28=19,6; 29=20,1; 30=21,4; 31=22,11/12; 32=27,9; 33=30,1; 34=32,4; 35=34,8; 36=35,4; 37=37,9 von: Economies et sociétés (ISSN: 0013-0567)