@BOOK{CsuDasKelPau_j1994_a, author = {Erzs\'ebet~Csuhaj-Varj\'u and J{\"u}rgen~Dassow and Jozef~Kelemen and Gheorghe~P\u{a}un}, title = {{Grammar Systems: A Grammatical Approach to Distribution and Cooperation}}, publisher = gordonbreach, year = 1994, volume = 5, series = {Topics in Computer Science} }