1. Bykhovskiĭ, B̀.B.: The Poincaré inequality for two-dimensional manifolds without boundary. An elementary proof. (Russian) Vestnik Leningrad. Univ. Mat. Mekh. Astronom. 130(2), 8–11 (1988); English transl. in Vestnik Leningrad Univ. Math. 21(2), 8–12 (1988)
2. Decent, S.P.: Hydrodynamic assist and the dynamic contact angle in the coalescence of liquid drops. IMA J. Appl. Math. 71(5), 740–767 (2006)
3. Golovkin, K.K.: On equivalent normalizations of fractional spaces. (Russian) Trudy Mat. Inst. Steklov. 66, 364–383 (1962); English transl. Amer. Math. Soc. Transl. 81, 257–280 (1969)
4. Golovkin, K.K., Solonnikov, V.A.: Estimates for integral operators in translation-invariant norms. (Russian) Trudy Mat. Inst. Steklov. 70, 47–58 (1964); English transl. Amer. Math. Soc. Transl. 61, 97–112 (1967)
5. Golovkin, K.K., Solonnikov, V.A.: Estimates for integral operators in translation-invariant norms. II. (Russian) Trudy Mat. Inst. Steklov. 92, 5–30 (1966); English transl. Proc. Steklov Inst. Math. 92, 3–32 (1968)