[1] Aronson D. G.: Bounds for fundamental solution of a parabolic equation. Bull. Amer. Math. Soc. 73 (1968), 890-896. MR 0217444

[2] Bensoussan A., Frehse J.: Nonlinear elliptic systems in stochastic game theory. Journ. Reine u. Angew. Math. 350 (1984), 23-67. MR 0743532 | Zbl 0531.93052

[3] Campanato S.: Equazioni paraboliche del secondo ordine e spazi $L^{2,0}(Ω,δ)$. Ann. Matem. Pura Appl. (4) 73 (1966), 55-102. MR 0213737

[4] Da Prato G.: Spazi $L^{p,0}$ e loro proprietà. Ann. Matem. Pura Appl. 69 (1965), 383-392. MR 0192330

[5] Frehse J.: Interpolation und Regularität bei Lösungen elliptischer Differentialungleichungen. Zeitschr. Angew. Math. u. Mech. 62 (1982), T227-T228. MR 0677312 | Zbl 0563.35029

[6] Giaquinta M., Struwe M.: An optimal regularity result for a class of quasilinear parabolic systems. Manuscripta math. 36 (1981), 223-239. MR 0641975 | Zbl 0475.35026

[7] Kufner A., John O., Fučík S.: Function Spaces. Academia, Praha 1977. MR 0482102

[8] Ladyženskaya O. A., Solonnikov V. A., Ural'seva N. N.: Linear and quasilinear equations of parabolic type. AMS, Providence, R.I., Transl. Math. Monogr. 23 (1968).

[9] Struwe M.: A counterexample in regularity theory for parabolic systems. Czech. Math. Journal 34 (109) (1984), 183-188. MR 0743484 | Zbl 0573.35053

[10] Struwe M.: On the Hölder continuity of bounded weak solutions of quasilinear parabolic equations. Comm. Pure Appl. Math. 21 (1968), 205-226.