@inproceedings{inproceedingse56449b9, title = {Ejection rates of superluminal components in 3c273}, author = {Abraham, Zulema and Carrara, E A and Zensus, J A and Unwin, S C}, year = {1994}, publisher = {Nrao}, booktitle = {Compact Extragalactic Radio Sources: Workshop Held at the National Radio Astronomy Observatory} }