Updates

Change Log

Corrected three equations and updated publication information for references to Damour et al. 2000 and Martel and Poisson (2001).

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	Equation (25): longitudinal operator is acting in the conformal space. Changed $&tidle; ij ∇j (𝕃X )$ to $&tidle; &tidle; ij ∇j (𝕃X )$ .
	Equation (50): Corrected sign error in grad(K) term from $− 4 3$ to $4 3$ .
	Equation (51): Corrected sign error in grad(K) term from $+ 43$ to $− 43$ and added missing index on divergence in line four, $&tidle;α&tidle;∇$ to $&tidle;α&tidle;∇j$ .