Ehlerová, S., Palouš, J., Theis, C., Hensler, G. Star formation in expanding shells: when and where. In: BREITSCHWERDT, D., FREYBERG, M.J., TÜMPER, J., eds. The local bubble and beyond. (Lyman-Spitzer Colloquium). Berlin: Springer, 1998, s. 143-416.