A Homomorphic Characterization of Recursively Enumerable Languages. - Sadaki Hirose; Satoshi Okawa; Masaaki Yoneda (Theor. Comput. Sci., 1985)

On the Impossibility of the Homomorphic Characterization of Context-Sensitive Languages. - Satoshi Okawa; Sadaki Hirose; Masaaki Yoneda (Theor. Comput. Sci., 1986)

Subclasses of Linear Context - Free Languages and Homomorphic Characterizations of Languages. - Satoshi Okawa; Sadaki Hirose (Syst. Comput. Jpn., 1991)

Series and Parallel Operations on Pomsets. - Zoltán Ésik; Satoshi Okawa (FSTTCS, 1999)

A Chomsky and Stanley Type Homomorphic Characterization of the Class of Linear Languages. - Pál Dömösi; Satoshi Okawa; Sadaki Hirose (Bull. EATCS, 1999)

A Chomsky-Schützenberger-Stanley Type Characterization of the Class of Slender Context-Free Languages. - Pál Dömösi; Satoshi Okawa (Acta Cybern., 2001)

Homomorphic characterizations of recursively enumerable languages with very small language classes. - Satoshi Okawa; Sadaki Hirose (Theor. Comput. Sci., 2001)

Characterizations of Language Classes: Universal Grammars, Dyck Reductions, and Homomorphisms. - Sadaki Hirose; Satoshi Okawa (Grammars and Automata for String Processing, 2003)

Upper Bounds of the Correlation Functions of a Class of Binary Zero-Correlation-Zone Sequences. - Takafumi Hayashi; Takao Maeda; Satoshi Okawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

On Computational Power of Insertion-Deletion Systems without Using Contexts. - Sadaki Hirose; Satoshi Okawa (IEICE Trans. Inf. Syst., 2005)

The Relations among Watson-Crick Automata and Their Relations with Context-Free Languages. - Satoshi Okawa; Sadaki Hirose (IEICE Trans. Inf. Syst., 2006)

An extended star graph: a proposal of a new network topology and its fundamental properties. - Satoru Watanabe; Satoshi Okawa (Int. J. Comput. Sci. Eng., 2006)

A Ternary Zero-Correlation Zone Sequence Set Having Wide Inter-Subset Zero-Correlation Zone. - Takafumi Hayashi; Takao Maeda; Shinya Matsufuji; Satoshi Okawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

A Generalized Construction of Zero-Correlation Zone Sequence Set with Sequence Subsets. - Takafumi Hayashi; Takao Maeda; Satoshi Okawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

On Context-Free Languages of Scattered Words. - Zoltán Ésik; Satoshi Okawa (Int. J. Found. Comput. Sci., 2013)

The firing squad synchronization problem with sub-generals. - Kazuya Yamashita; Yasuaki Nishitani; Sadaki Hirose; Satoshi Okawa; Nobuyasu Osato (Inf. Process. Lett., 2014)

ChemPert: mapping between chemical perturbation and transcriptional response for non-cancer cells. - Menglin Zheng; Satoshi Okawa; Miren Bravo; Fei Chen; María L. Martínez-Chantar; Antonio del Sol (Nucleic Acids Res., 2023)