w25.02 p. 25-27

cl kap. 30 par. 18

g21 No. 2 p. 5

w19.05 p. 23-25

w18.01 p. 22-24

w15 5/1 p. 16

w14 3/15 p. 7-11

w05 3/15 p. 10-15

w05 6/1 p. 12-14

w99 2/15 p. 20 par. 9-10

w93 1/15 p. 24

w93 10/15 p. 20

lr kap. 20