Springer Nature Book 'Mastering Machine Learning: From Basics to Advanced' Reportedly Published With Numerous Purportedly Nonexistent or Incorrect Citations

"Mastering Machine Learning: From Basics to Advanced," published by Springer Nature in April 2025, reportedly contained numerous purportedly nonexistent or materially incorrect academic citations. Independent checks allegedly found that many referenced works did not exist or were misattributed, with multiple named researchers reportedly confirming they did not author the cited material. The pattern of errors has been described as consistent with known LLM citation hallucinations.