One of their most recent publications is Brief paperBounded input power-bounded output power stability criterionCritère de stabilité à puissance d'entrée et à puissance de sortie limiteésBeschränkte eingangsleistung-beschränkte eusgangsleistung-stabilitätskriteriumКpитepий ycтoйчивocти c oгpaничeнными cтeпeнями вчoдa и вычoдa☆. Which was published in journal Automatica.

More information about T.A. Bickart research including statistics on their citations can be found on their Copernicus Academic profile page.

Brief paperBounded input power-bounded output power stability criterionCritère de stabilité à puissance d'entrée et à puissance de sortie limiteésBeschränkte eingangsleistung-beschränkte eusgangsleistung-stabilitätskriteriumКpитepий ycтoйчивocти c oгpaничeнными cтeпeнями вчoдa и вычoдa☆

AbstractA bounded input power-bounded output power stability criterion is derived for a class of single loop control systems having a memoryless, time-invariant, non-linear operator and a causal operator in the loop. The result is established by showing that a system from this class maps the Marcinkiewicz space M2 into itself. When the causal operator is further restricted to be a time-invariant, linear operator characterized by a convolution with a suitably restricted kernal, the main ingredient of the criterion can be replaced by the Popov criterion.

Brief paperBounded input power-bounded output power stability criterionCritère de stabilité à puissance d'entrée et à puissance de sortie limiteésBeschränkte eingangsleistung-beschränkte eusgangsleistung-stabilitätskriteriumКpитepий ycтoйчивocти c oгpaничeнными cтeпeнями вчoдa и вычoдa☆

AbstractA bounded input power-bounded output power stability criterion is derived for a class of single loop control systems having a memoryless, time-invariant, non-linear operator and a causal operator in the loop. The result is established by showing that a system from this class maps the Marcinkiewicz space M2 into itself. When the causal operator is further restricted to be a time-invariant, linear operator characterized by a convolution with a suitably restricted kernal, the main ingredient of the criterion can be replaced by the Popov criterion.

Brief paperBounded input power-bounded output power stability criterionCritère de stabilité à puissance d'entrée et à puissance de sortie limiteésBeschränkte eingangsleistung-beschränkte eusgangsleistung-stabilitätskriteriumКpитepий ycтoйчивocти c oгpaничeнными cтeпeнями вчoдa и вычoдa☆

AbstractA bounded input power-bounded output power stability criterion is derived for a class of single loop control systems having a memoryless, time-invariant, non-linear operator and a causal operator in the loop. The result is established by showing that a system from this class maps the Marcinkiewicz space M2 into itself. When the causal operator is further restricted to be a time-invariant, linear operator characterized by a convolution with a suitably restricted kernal, the main ingredient of the criterion can be replaced by the Popov criterion.