Mateusz Machalski
Source: Jak powstaje krój pisma – przedstawia Mateusz Machalski
Alexei Vanyashin
Source: Alexei Vanyashin: Quick Guide on Cyrillic
Alexandra Korolkova
Source: Alexandra Korolkova: The relatively easy way to find out the quality of a Cyrillic typeface
Cyrillic small letters н, в, п
Cyrillic small letters н, в, п in a humanist sans serif font
Further Readings
Gunnlaurgun SE Briem: Briem Net
Microsoft Typography: Character design standards (1 of 10)
Alexandra Korolkova: The relatively easy way to find out the quality of a Cyrillic typeface
Alexei Vanyashin: Serbian localized forms (Roman)
Bigelow & Holmes: Typeface Design & Research
Igor Petrovic: How to design Cyrillic letters Њ (Nje), Љ (Lje), Ћ (Tshe), and Ђ (Dje)
Mikhail Strukov, Yury Ostromentsky, Ilya Ruderman: Cyrillic on Google Fonts: Humanist Sans