Tutorial Component

@techreport{pub1989,
    author = {

Ullrich, Carsten
 and 

Andres, Eric
 and 

Kärger, Philipp
 and 

Melis, Erica
 and 

Moormann, Marianne
},
    title = {Tutorial Component},
    series = {LeActiveMath},
    year = {2006},
    volume = {D24},
    pages = {143},
    institution = {LeActiveMath Consortium}
}