[1] GAINES R. E., MAWHIN J. L.: 
Coincidence Degree and Nonlinear Differential Equations. Springer-Verlag, Berlin-Heidelberg-New York, 1977. 
MR 0637067 | 
Zbl 0339.47031 
[2] RODRIGUEZ A., TINEO A.: 
Existence theorems for the Dirichlet problem without growth restrictions. J. Math. Anal. Appl. 135 (1988), 1-7. 
MR 0960802 | 
Zbl 0674.34016 
[3] ŠENKYŘÍK M.: 
On a third-order three-point regular boundary value problem. Acta Univ. Palack. Olomouc. Fac. Rerum Natur. Math. XXX (1991), 75-86. 
MR 1166427 | 
Zbl 0752.34017