1.
Grondbeginselen van de methode (1817)
2.
3.
Notes and Queries - volume 1 - Page 169
Notes and Queries - volume 7 - Page 97
Notes and Queries - volume 9, 2nd Series - Page 48
Notes and Queries - volume 9, 3rd Series - Page 280
Notes and Queries - volume 9, 2nd Series - Page 64
Notes and Queries - volume 5, 3rd Series - Page 406
Notes and Queries - volume 1 - Page 119
Notes and Queries - volume 8 - Page 196
Notes and Queries - volume 10, 2nd Series - Page 185
4.
5.
6.
7.