References?

[lilienth]

Thank you very much for this very good curriculum!
I have one concern: There are some chapters that have just one reference. That's surprising to me. I would expect there to be multiple references for the topics we teach in the iSAQB.
The references:
Chapter 1: three: [E. F. Codd 1990], [W. H. Inmon 2005], [R. Kimball 2011]
Chapter 2: seven: [J. Reis 2022], [M. Bornstein 2020], [W. H. Inmon 2005], [R. Kimball 2011], [D. Linstedt 2015], [C. Giebler et al. 2021], [P. Pääkkönen 2015]
Chapter 3: one: [R. Castagna 2022]
Chapter 4: one: [J. Reis 2022]
Chapter 5: one: [starke]
Chapter 6: one: [starke]
Chapter 7: one: [starke]
Chapter 8: none
Chapter 9: three: [H. Varshney 2023], [E. Levy 2021], [B. Singhal 2022]
Chapter 10: three: [J. Christ et al. 2018], [J. Majchrzak 2022], [Z. Dehghani 2023]
Chapter 11: one: [J. Reis 2022]
The reference [starke] is not listed in the list of references.