There are several reputable sources where you can find publications on the philosophy of ethics in artificial intelligence. These publications provide valuable insights into the ethical considerations surrounding the development and use of AI technologies. Some of the prominent sources include:

1. Academic Journals:
- Journal of Artificial Intelligence and Ethics: This journal specifically focuses on the ethical implications of AI and publishes research papers, case studies, and theoretical discussions related to the intersection of AI and ethics.
- Ethics and Information Technology: This interdisciplinary journal explores ethical and moral issues arising from the use of information and communication technologies, including AI.
- AI & Society: This journal covers the social, ethical, and philosophical implications of AI and aims to foster a deeper understanding of AI's impact on society.

2. Research Institutions and Think Tanks:
- Future of Humanity Institute (FHI): FHI is a multidisciplinary research institute at the University of Oxford that conducts research on the long-term impact of AI. They publish reports and papers on AI ethics, safety, and policy.
- Center for the Study of Existential Risk (CSER): CSER, based at the University of Cambridge, focuses on studying global risks, including those posed by AI. They publish reports and academic papers on AI ethics and safety.

3. Conferences and Workshops:
- The Conference on Neural Information Processing Systems (NeurIPS): NeurIPS is one of the leading conferences in AI research. It features workshops and presentations on ethical considerations in AI.
- The AAAI/ACM Conference on AI, Ethics, and Society: This conference brings together researchers and practitioners to discuss the ethical and societal impacts of AI.

4. Books and Book Chapters:
- "Ethics of Artificial Intelligence and Robotics" edited by Vincent C. Müller: This book offers a comprehensive exploration of the ethical dimensions of AI and robotics, covering topics such as responsibility, privacy, and fairness.
- "Machine Ethics" by Michael Anderson and Susan Leigh Anderson: This book delves into the concept of machine ethics, examining how AI systems can be designed to make ethical decisions.

These sources provide a wealth of information on the philosophy of ethics in artificial intelligence. It is essential to consult multiple sources to gain a well-rounded understanding of the subject matter.