[1] J. Rákosník: On embeddings and traces in Sobolev spaces with weights of power type. Approximation and Function Spaces, vol. 22, Banach Center Publications. PWN  – Polish Scientific Publishers, Warsaw, 1989, pp. 331–339. MR 1097204

[2] A. Nekvinda, L. Pick: Characterization of traces of the weighted Sobolev space $H^{1,p}_{\varepsilon ,M}$. Functiones et Approximatio 20 (1992), 143–151. MR 1201723

[3] V. G. Maz’ja, B. A. Plamenevskij: Weighted spaces with inhomogeneous norms and boundary value problems in domains with conical points. Elliptische Differentialgleichungen, (Tagung in Rostock 1977), WPU Rostock, 1978, pp. 169–190.

[4] A. Kufner: Weighted Sobolev Spaces. John Wiley + Sons, Chichester-New York-Brisbane-Toronto-Singapore, 1985. MR 0802206 | Zbl 0579.35021

[5] E. Gagliardo: Caratterizzazioni delle trace sulla frontiera relative ad alcuna di funzioni in $n$ variabili. Rend. Sem. Mat. Univ. Padova 27 (1957), 284–305. MR 0102739

[6] J. Kadlec, A. Kufner: Characterization of functions with zero traces by integrals with weight functions I, II. Časopis Pěst. Mat. 91 (1966), 463–471, 92(1967), 16–28. MR 0212559

[7] B. Opic, A. Kufner: Hardy-type Inequalities. Pitman Research Notes Math. Series 219, Longman Scientific and Technical, 1990. MR 1069756

[8] J. García-Cuerva, J. L. Rubio de Francia: Weighted norm inequalities and related topics. Math. Studies 116 (1985), North Holland. MR 0807149

[9] A. Nekvinda: Characterization of traces of weighted Sobolev spaces with $W^{1,p}(\Omega ,d^p_M)$ on $M$. Czech Math. Journal 43 (118) (1993), 695–722. MR 1258430