Published in Notes from the Leyden Museum, in 1899, in volume 20, pages 195-198

Published in Notes From The Leyden Museum, in 1899, in volume 20, issue 4, pages 185-194

Published in Notes From The Leyden Museum, in 1899, in volume 20, issue 4, pages 199-200

Published in Notes From The Leyden Museum, in 1899, in volume 20, issue 4, pages 201-209

Published in Notes From The Leyden Museum, in 1899, in volume 20, issue 4, pages 210

Published in Notes From The Leyden Museum, in 1899, in volume 20, issue 4, pages 224-226

Published in Notes From The Leyden Museum, in 1899, in volume 20, issue 4, pages 231-232

Published in Notes From The Leyden Museum, in 1899, in volume 20, issue 4, pages 240-242

Published in Notes From The Leyden Museum, in 1899, in volume 20, issue 4, pages 249-254

Published in Notes From The Leyden Museum, in 1899, in volume 21, pages 31-32

Published in Notes From The Leyden Museum, in 1899, in volume 21, pages 53-144

Published in Notes from the Leyden Museum, in 1899, in volume 21, issue 5, pages 33-52

Published in Notes From The Leyden Museum, in 1899, in volume 21, issue 1/3, pages 1-22

Published in Notes From The Leyden Museum, in 1899, in volume 21, issue 1/3, pages 23-26

Published in Notes From The Leyden Museum, in 1899, in volume 21, issue 1/3, pages 27-30