Andrew Sihler in the context of "Cowgill's law (Germanic)"

Cowgill's law says that a PIE laryngeal /h₃/, and possibly /h₂/, turns into /k/ in Proto-Germanic when directly preceded by a sonorant and followed by /w/. This law is named after Indo-Europeanist Warren Cowgill.

This law is still controversial, although increasingly accepted. Donald Ringe (2006) accepts it; Andrew Sihler (1995) is noncommittal.