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Tisdell Christopher C.; Liu Yongjian; Liu Zhenhai: Existence of solutions to discrete and continuous second-order boundary value problems via Lyapunov functions and a priori bounds. (2019)
Tisdell Christopher C.: Existence of solutions to second-order boundary value problems without growth restrictions. (2016)
Rudd Matthew; Tisdell Christopher C.: Positive symmetric solutions of singular semipositone boundary value problems. (2009)