- Kirchhoff method
- Kirchhoff's circuit law
- Kirchhoff's circuit laws
- Kirchhoffs [diffraction] formula
- Kirchhoffs diffraction formula
- Kirchhoffs diffraction theory
- Kirchhoff's equations
- Kirchhoffs formula
- Kirchhoffs integral theorem
- Kirchhoffs integral theorem, Fresnel-Kirchhoff integral theorem
- Kirchhoff's law
- kirchhoff's law
- Kirchhoff's law of thermal radiation
- Kirchhoff solution
- Kirchhoff's radiation law
- Kirchhoff sum index
- Kirchhoff's voltage law
- Kirchhoff voltage law
- Kirchhoff´s hypotheses
- Kirchhoff’s current law
- Kirchhoff’s equation
- Kirchhoff’s laws
- Kirghiz literature
- Kirghiz sheep
- Kirgiz