Parameters for solid state functionals with unclear reference

[awvwgk]

Some functionals have unclear origin, i.e. no publication where they were introduced.

simple-dftd3/src/dftd3/param.f90

Lines 326 to 328 in 442fbec

	case(p_rpbe_df)
	param = d3_param(a1=0.1820_wp, s8=0.8318_wp, a2=4.0094_wp)
	! TODO: find reference (it is not GMTKN55)

simple-dftd3/src/dftd3/param.f90

Lines 455 to 457 in 442fbec

	case(p_hcth120_df)
	param = d3_param(a1=0.3563_wp, s8=1.0821_wp, a2=4.3359_wp)
	! TODO: find reference

simple-dftd3/src/dftd3/param.f90

Lines 464 to 466 in 442fbec

	case(p_pwgga_df)
	param = d3_param(a1=0.2211_wp, s8=2.6910_wp, a2=6.7278_wp)
	! TODO: find reference

simple-dftd3/src/dftd3/param.f90

Lines 467 to 469 in 442fbec

	case(p_hsesol_df)
	param = d3_param(a1=0.4650_wp, s8=2.9215_wp, a2=6.2003_wp)
	! TODO: find reference