- 2007. Making the Crooked Straight. Udo Schaefer, Nicola Towfigh, Ulrich Gollmer. — Two pages on a prophecy concerning the advent of Man Yuzhiruhu'llah.
- 2006. Dialogue on Infallibility: A response to Udo Schaefer's 'Infallible Institutions?'. Peter Terry. — An extended review of the themes first published in Schaefer's Making the Crooked Straight, presente...
- 2004-01-20. Making the Crooked Straight, by Udo Schaefer, Nicola Towfigh, and Ulrich Gollmer: Review. Seena Fazel.
- 2004. Making the Crooked Straight, by Udo Schaefer, Nicola Towfigh, and Ulrich Gollmer: Review. Seena Fazel.
- 2002. Infallible Institutions?. Udo Schaefer. — Historical and Baha'i interpretations of infallibility.
- 2001-06. Making the Crooked Straight, by Udo Schaefer, Nicola Towfigh, and Ulrich Gollmer: Review. Denis MacEoin.
- 2001. Making the Crooked Straight, review by Denis MacEoin: Responses. Anthony Lee, Kavian Sadeghzade Milani, Udo Schaefer. — Responses by Tony Lee, Kavian Milani, and Udo Schaefer to Denis MacEoin's review of Making the Crook...
- 2001. Refutation of Francesco Ficicchia and the Dangers of Silence, The. Jack McLean. — Examination of the prejudice caused to the reputation of the Faith in academic and ecclesiastical ci...
- 2001. Bahá'í Apologetics?. Udo Schaefer. — Apologetics is a branch of systematic theology rather than religious studies. It can help explore th...
- 2000/2005. Making the Crooked Straight: Foreword, and letter to World Order. Jack McLean. — Foreword to the published book, followed by a letter to the editor for World Order regarding their i...
- 2000 November. Making the Crooked Straight, by Udo Schaefer, Nicola Towfigh, and Ulrich Gollmer: Review. Iain S. Palin.
- 2000. Making the Crooked Straight: A Contribution to Baha'i Apologetics [excerpt]. Udo Schaefer, Nicola Towfigh, Ulrich Gollmer, Geraldine Schuckelt, trans. . — Front- and back-matter of the book only: Contents, Preface, Introduction, Conclusion, Bibliography, ...
- 1998. Making the Crooked Straight, by Udo Schaefer, Nicola Towfigh, and Ulrich Gollmer: Review. Heshmat Moayyad. — A commentary for Baha’is examining the balance of critical thought with loyalty to Baha’i instit...
- 1998. Making the Crooked Straight, by Udo Schaefer, Nicola Towfigh, and Ulrich Gollmer: Review. Christian Cannuyer, Greg Massiah, trans. .
- 1997-10. Making the Crooked Straight, by Udo Schaefer, Nicola Towfigh, and Ulrich Gollmer: Review. Manfred Hutter.
- 1997. Making the Crooked Straight, by Udo Schaefer, Nicola Towfigh, and Ulrich Gollmer: Review. Christian Cannuyer.
- 1997. Making the Crooked Straight, by Udo Schaefer, Nicola Towfigh, and Ulrich Gollmer: Review. Christian Cannuyer.
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