Update irradiance.py

RDaxini · RDaxini · commit e43c54121287 · 2024-08-30T13:32:54.000+01:00
add doi
diff --git a/pvlib/irradiance.py b/pvlib/irradiance.py
@@ -694,6 +694,7 @@ def klucher(surface_tilt, surface_azimuth, dhi, ghi, solar_zenith,
     ----------
     .. [1] Klucher, T.M., 1979. Evaluation of models to predict insolation on
        tilted surfaces. Solar Energy 23 (2), 111-114.
+       :doi:`10.1016/0038-092X(79)90110-5`
     '''
 
     # zenith angle with respect to panel normal.
