@book{1990-vanleeuwen
,title={{Handbook of theoretical computer science, volume A: algorithms and complexity}}
,booktitle={{Handbook of theoretical computer science, volume A: algorithms and complexity}}
,editor={Jan van Leeuwen}
,ISBN={0--444--88071--2}
,MR={92d:68001}
,publisher={Elsevier}
,address={Amsterdam}
,year={1990}
}