References
1. J.C. Kapteyn; Zijn leven en werken, by H. Hertzsprung-Kapteyn, Wolters
1928, www.dbnl.org/tekst/hert042jcka01_01/, www.astro.rug.nl/JCKapteyn?
HHKbiog.html.
Preface
2. Cited in Contraterrein by R.A. Cornets de Groot. [www.cornetsdegtoot.com/
pdf/Contraterrein.pdf ]
3. The life and works of J.C. Kapteyn: An annotated translation with preface and
introduction, by E. Robert Paul, Kluwer (1993), ISBN 978-07-923-2603-8.
4. The legacy of J.C. Kapteyn: Studies on Kapteyn and the development of modern
astronomy, by P.C. van der Kruit & K. van Berkel, Springer, ISBN 0-79236393-0 (2000).
5. Jacobus Cornelius Kapteyn: Born investigator of the Heavens, by P.C. van der Kruit,
Astrophysics and Space Science Library, Vol. 416, Springer Publishers, ISBN
978-3-319-10875-9 (2015). www.astro.rug.nl/JCKapteyn.
6. De inrichting van de hemel: Een biografie van astronoom Jacobus C. Kapteyn, by P.C.
van der Kruit, Amsterdam University Press (2016), ISBN 978-94-6298-042-6.
7. Jan Hendrik Oort: Master of the Galactic System, by P.C. van der Kruit, Astrophysics and Space Science Library, Vol. 459, Springer Publishers, ISBN 978-3319-10875-9 (2019). Accompanying Website at www.astro.rug.nl/JHOort.
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Switzerland AG 2021
P. C. van der Kruit, Pioneer of Galactic Astronomy: A Biography of Jacobus C. Kapteyn,
Springer Biographies, https://doi.org/10.1007/978-3-030-55423-1
289
1. J.C. Kapteyn; Zijn leven en werken, by H. Hertzsprung-Kapteyn, Wolters
1928, www.dbnl.org/tekst/hert042jcka01_01/, www.astro.rug.nl/JCKapteyn?
HHKbiog.html.
Preface
2. Cited in Contraterrein by R.A. Cornets de Groot. [www.cornetsdegtoot.com/
pdf/Contraterrein.pdf ]
3. The life and works of J.C. Kapteyn: An annotated translation with preface and
introduction, by E. Robert Paul, Kluwer (1993), ISBN 978-07-923-2603-8.
4. The legacy of J.C. Kapteyn: Studies on Kapteyn and the development of modern
astronomy, by P.C. van der Kruit & K. van Berkel, Springer, ISBN 0-79236393-0 (2000).
5. Jacobus Cornelius Kapteyn: Born investigator of the Heavens, by P.C. van der Kruit,
Astrophysics and Space Science Library, Vol. 416, Springer Publishers, ISBN
978-3-319-10875-9 (2015). www.astro.rug.nl/JCKapteyn.
6. De inrichting van de hemel: Een biografie van astronoom Jacobus C. Kapteyn, by P.C.
van der Kruit, Amsterdam University Press (2016), ISBN 978-94-6298-042-6.
7. Jan Hendrik Oort: Master of the Galactic System, by P.C. van der Kruit, Astrophysics and Space Science Library, Vol. 459, Springer Publishers, ISBN 978-3319-10875-9 (2019). Accompanying Website at www.astro.rug.nl/JHOort.
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Switzerland AG 2021
P. C. van der Kruit, Pioneer of Galactic Astronomy: A Biography of Jacobus C. Kapteyn,
Springer Biographies, https://doi.org/10.1007/978-3-030-55423-1
289