About one boundary task for the parabolo-hyperbolic equation of the fourth order in pentagonal area
M. Mamajonov

References
1.	Dzhuraev T. D., Mamazhanov M., “Kraevye zadachi dlya odnogo klassa uravnenij chetvertogo poryadka smeshannogo tipa”, Differencial'nye uravneniya, 200:1 (1986), 25–31